CVE-2024-2961: The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converti
Noroxi assessment
Priority: Plan (action score 55/100)
- A ready-made attack module is public (Metasploit, Nuclei); exploiting it takes no special expertise.
- Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
- Probability of exploitation in the next 30 days: 88.3% (FIRST EPSS); higher than 99.7% of all records.
- Someone with local access to the system can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: compat-libpthread-nonshared (AlmaLinux:8) 2.28-236.el8_9.13, 2.28-251.el8_10.1; glibc (AlmaLinux:8) 2.28-251.el8_10.1, 2.28-236.el8_9.13; glibc-all-langpacks (AlmaLinux:8) 2.28-251.el8_10.1, 2.28-236.el8_9.13.
Add it to your regular patch cycle. Upgrade to compat-libpthread-nonshared (AlmaLinux:8) 2.28-236.el8_9.13, 2.28-251.el8_10.1; glibc (AlmaLinux:8) 2.28-251.el8_10.1, 2.28-236.el8_9.13; glibc-all-langpacks (AlmaLinux:8) 2.28-251.el8_10.1, 2.28-236.el8_9.13 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to the ISO-2022-CN-EXT character set, which may be used to crash an application or overwrite a neighbouring variable.
- BDU:2024-03171
- ALSA-2024:2722
- ALSA-2024:3269
- ALSA-2024:3339
- DLA-3807-1
- DSA-5673-1
- openSUSE-SU-2024:13877-1
- openSUSE-SU-2025:0081-1
- openSUSE-SU-2025:14688-1
- RHSA-2024:2722
- RHSA-2024:2799
- RHSA-2024:3269
- RHSA-2024:3309
- RHSA-2024:3312
- RHSA-2024:3339
- RHSA-2024:3411
- RHSA-2024:3423
- RHSA-2024:3464
- RHSA-2024:3588
- RLSA-2024:2722
- Published
- Apr 17, 2024
- Updated
- Oct 15, 2026
- EPSS
- 88.3% · 99th percentile
- CWE
- CWE-787
Report tools
Action score
55
Plan
Add it to your regular patch cycle.
- CVSS
- 29 / 40 · 7.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 26 / 30 · 88.3%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Weaponized exploit exists
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| gnu | glibc | cpe:2.3:a:gnu:glibc |
| netapp | active iq unified manager | cpe:2.3:a:netapp:active_iq_unified_manager |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| netapp | hci h300s firmware | cpe:2.3:o:netapp:hci_h300s_firmware |
| netapp | hci h300s | cpe:2.3:h:netapp:hci_h300s |
| netapp | hci h500s firmware | cpe:2.3:o:netapp:hci_h500s_firmware |
| netapp | hci h500s | cpe:2.3:h:netapp:hci_h500s |
| netapp | hci h700s firmware | cpe:2.3:o:netapp:hci_h700s_firmware |
| netapp | hci h700s | cpe:2.3:h:netapp:hci_h700s |
| netapp | hci h410s firmware | cpe:2.3:o:netapp:hci_h410s_firmware |
| netapp | hci h410s | cpe:2.3:h:netapp:hci_h410s |
| netapp | hci h410c firmware | cpe:2.3:o:netapp:hci_h410c_firmware |
and 9 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux10.0
- gnu glibc2.1.93 and later · before 2.40
- netapp active iq unified managerall versions
- netapp hci compute nodeall versions
- netapp hci h300s firmwareall versions
- netapp hci h410c firmwareall versions
- netapp hci h410s firmwareall versions
- netapp hci h500s firmwareall versions
- netapp hci h610c firmwareall versions
- netapp hci h610s firmwareall versions
- netapp hci h615c firmwareall versions
- netapp hci h700s firmwareall versions
- netapp ontap select deploy administration utilityall versions
Versions reported by the vendor
Affected version ranges reported by the assigning authority (glibc). Independent of NVD's CPE analysis and usually ahead of it.
The GNU C Library glibc
- 2.1.93 and later · before 2.40affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | compat-libpthread-nonshared | before 2.28-236.el8_9.13 | 2.28-236.el8_9.13 |
| AlmaLinux:8 | compat-libpthread-nonshared | before 2.28-251.el8_10.1 | 2.28-251.el8_10.1 |
| AlmaLinux:8 | glibc | before 2.28-251.el8_10.1 | 2.28-251.el8_10.1 |
| AlmaLinux:8 | glibc | before 2.28-236.el8_9.13 | 2.28-236.el8_9.13 |
| AlmaLinux:8 | glibc-all-langpacks | before 2.28-251.el8_10.1 | 2.28-251.el8_10.1 |
| AlmaLinux:8 | glibc-all-langpacks | before 2.28-236.el8_9.13 | 2.28-236.el8_9.13 |
| AlmaLinux:8 | glibc-benchtests | before 2.28-236.el8_9.13 | 2.28-236.el8_9.13 |
| AlmaLinux:8 | glibc-benchtests | before 2.28-251.el8_10.1 | 2.28-251.el8_10.1 |
| AlmaLinux:8 | glibc-common | before 2.28-236.el8_9.13 | 2.28-236.el8_9.13 |
| AlmaLinux:8 | glibc-common | before 2.28-251.el8_10.1 | 2.28-251.el8_10.1 |
| AlmaLinux:8 | glibc-devel | before 2.28-251.el8_10.1 | 2.28-251.el8_10.1 |
| AlmaLinux:8 | glibc-devel | before 2.28-236.el8_9.13 | 2.28-236.el8_9.13 |
| AlmaLinux:8 | glibc-doc | before 2.28-251.el8_10.1 | 2.28-251.el8_10.1 |
| AlmaLinux:8 | glibc-doc | before 2.28-236.el8_9.13 | 2.28-236.el8_9.13 |
| AlmaLinux:8 | glibc-gconv-extra | before 2.28-251.el8_10.1 | 2.28-251.el8_10.1 |
| AlmaLinux:8 | glibc-gconv-extra | before 2.28-236.el8_9.13 | 2.28-236.el8_9.13 |
| AlmaLinux:8 | glibc-headers | before 2.28-251.el8_10.1 | 2.28-251.el8_10.1 |
| AlmaLinux:8 | glibc-headers | before 2.28-236.el8_9.13 | 2.28-236.el8_9.13 |
| AlmaLinux:8 | glibc-langpack-aa | before 2.28-251.el8_10.1 | 2.28-251.el8_10.1 |
| AlmaLinux:8 | glibc-langpack-aa | before 2.28-236.el8_9.13 | 2.28-236.el8_9.13 |
| AlmaLinux:8 | glibc-langpack-af | before 2.28-236.el8_9.13 | 2.28-236.el8_9.13 |
| AlmaLinux:8 | glibc-langpack-af | before 2.28-251.el8_10.1 | 2.28-251.el8_10.1 |
| AlmaLinux:8 | glibc-langpack-agr | before 2.28-251.el8_10.1 | 2.28-251.el8_10.1 |
| AlmaLinux:8 | glibc-langpack-agr | before 2.28-236.el8_9.13 | 2.28-236.el8_9.13 |
+96
Same product
gnu: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-4911Glibc: buffer overflow in ld.so leading to privilege escalationKEV80Now
- CVE-2015-0235Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and other 2.x versions before 2.18, allows context-depen68This week
- CVE-2015-7547Multiple stack-based buffer overflows in the (1) send_dg and (2) send_vc functions in the libresolv library in the GNU C Library (aka glibc 60This week
Published before and after this one in the same product
- ← EarlierCVE-2023-6779Jan 31, 2024 · Glibc: off-by-one heap-based buffer overflow in __vsyslog_internal()31Monitor
- ← EarlierCVE-2023-6780Jan 31, 2024 · Glibc: integer overflow in __vsyslog_internal()22Monitor
- Later →CVE-2024-33599May 6, 2024 · nscd: Stack-based buffer overflow in netgroup cache32Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:compat-libpthread-nonshared | 2.28-236.el8_9.13 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glibc | 2.28-236.el8_9.13 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glibc-all-langpacks | 2.28-236.el8_9.13 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glibc-benchtests | 2.28-236.el8_9.13 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glibc-common | 2.28-236.el8_9.13 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glibc-devel | 2.28-236.el8_9.13 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glibc-doc | 2.28-236.el8_9.13 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glibc-gconv-extra | 2.28-236.el8_9.13 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glibc-headers | 2.28-236.el8_9.13 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glibc-langpack-aa | 2.28-236.el8_9.13 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glibc-langpack-af | 2.28-236.el8_9.13 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glibc-langpack-agr | 2.28-236.el8_9.13 · AlmaLinux:8 | Package registry (OSV) |
| debian:glibc | 2.36-9+deb12u6 · Debian:12 | Package registry (OSV) |
| opensuse:glibc | 2.31-150300.74.1 · openSUSE:Leap Micro 5.3 | Package registry (OSV) |
| opensuse:phpMyAdmin | 5.2.2-bp156.4.3.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| red hat:compat-libpthread-nonshared | 0:2.28-236.el8_9.13 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:glibc-all-langpacks-debuginfo | 0:2.28-236.el8_9.13 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:glibc-benchtests-debuginfo | 0:2.28-236.el8_9.13 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:glibc-common-debuginfo | 0:2.28-236.el8_9.13 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:glibc-debuginfo | 0:2.28-236.el8_9.13 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:glibc-debugsource | 0:2.28-236.el8_9.13 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:glibc-gconv-extra-debuginfo | 0:2.28-236.el8_9.13 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:glibc-utils | 0:2.28-236.el8_9.13 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:glibc-utils-debuginfo | 0:2.28-236.el8_9.13 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libnsl-debuginfo | 0:2.28-236.el8_9.13 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:nscd-debuginfo | 0:2.28-236.el8_9.13 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:nss_db-debuginfo | 0:2.28-236.el8_9.13 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| rocky linux:glibc | 0:2.28-236.el8_9.13 · Rocky Linux:8 | Package registry (OSV) |
| suse:glibc | 2.31-150300.74.1 · SUSE:Linux Enterprise Micro 5.3 | Package registry (OSV) |
| suse:glibc-livepatches | 0.1-150400.3.3.1 · SUSE:Linux Enterprise Live Patching 15 SP4 | Package registry (OSV) |
+1
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×1
- Nuclei detection template ×1
- Proof-of-concept repository on GitHub ×17
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Metasploit module | exploit/linux/http/magento_xxe_to_glibc_buf_overflowCosmicSting: Magento Arbitrary File Read (CVE-2024-34102) + PHP Buffer Overflow in the iconv() function of glibc (CVE-2024-2961)exploit | 2024-07-26 |
| Nuclei detection template | Nuclei template CVE-2024-2961 | — |
| Proof-of-concept repository on GitHub | stars:2 | 2024-04-24 |
| Proof-of-concept repository on GitHub | stars:5 | 2024-05-20 |
| Proof-of-concept repository on GitHub | stars:504 | 2024-05-27 |
| Proof-of-concept repository on GitHub | stars:0 | 2024-05-30 |
| Proof-of-concept repository on GitHub | stars:0 | 2024-06-03 |
| Proof-of-concept repository on GitHub | stars:0 | 2024-06-04 |
| Proof-of-concept repository on GitHub | stars:2 | 2024-06-04 |
| Proof-of-concept repository on GitHub | stars:5 | 2025-01-27 |
| Proof-of-concept repository on GitHub | stars:0 | 2025-01-29 |
| Proof-of-concept repository on GitHub | stars:1 | 2025-02-02 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- First PoC+6 d
- Metasploit+99 d
- TodayNov 3, 2026+930 d
No history yet (it accumulates with the daily EPSS job).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- Charles Folfinder
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2023-25139439 days apartsprintf in the GNU C Library (glibc) 2.37 has a buffer overflow (out-of-bounds write) in some situations with a correct buffer size.39Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- High
Weakness class (CWE)
CWE-787 · Out-of-bounds WriteCVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (19 more)Show less
- www.openwall.com/lists/oss-security/2024/04/18/4
- www.openwall.com/lists/oss-security/2024/04/24/2
- www.openwall.com/lists/oss-security/2024/05/27/1
- www.openwall.com/lists/oss-security/2024/05/27/2
- www.openwall.com/lists/oss-security/2024/05/27/3
- www.openwall.com/lists/oss-security/2024/05/27/4
- www.openwall.com/lists/oss-security/2024/05/27/5
- www.openwall.com/lists/oss-security/2024/05/27/6
- www.openwall.com/lists/oss-security/2024/07/22/5
- lists.debian.org/debian-lts-announce/2024/05/msg00001.html
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BTJFBGHDYG5PEIFD5WSSSKSFZ2AZWC5N/
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P3I4KYS6EU6S7QZ47WFNTPVAHFIUQNEL/
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YAMJQI3Y6BHWV3CUTYBXOZONCUJNOB2Z/
- security.netapp.com/advisory/ntap-20240531-0002/
- sourceware.org/git/?p=glibc.git;a=blob;f=advisories/GLIBC-SA-2024-0004
- www.ambionics.io/blog/iconv-cve-2024-2961-p1
- www.ambionics.io/blog/iconv-cve-2024-2961-p2
- www.ambionics.io/blog/iconv-cve-2024-2961-p3
- cert-portal.siemens.com/productcert/html/ssa-082556.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.