The do_ssl3_write function in s3_pkt.c in OpenSSL 1.x through 1.0.1g, when SSL_MODE_RELEASE_BUFFERS is enabled, does not properly manage a b
The do_ssl3_write function in s3_pkt.c in OpenSSL 1.x through 1.0.1g, when SSL_MODE_RELEASE_BUFFERS is enabled, does not properly manage a buffer pointer during certain recursive calls, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via vectors that trigger an alert condition.
- Published
- May 6, 2014
- Updated
- Jun 16, 2026
- EPSS
- 43.8% · 99th percentile
- CWE
- CWE-476
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Report tools
Action score
30
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 13 / 30 · 43.8%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| openssl | openssl | cpe:2.3:a:openssl:openssl |
| mariadb | mariadb | cpe:2.3:a:mariadb:mariadb |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| opensuse | opensuse | cpe:2.3:o:opensuse:opensuse |
| suse | linux enterprise desktop | cpe:2.3:o:suse:linux_enterprise_desktop |
| suse | linux enterprise server | cpe:2.3:o:suse:linux_enterprise_server |
| suse | linux enterprise software development kit | cpe:2.3:o:suse:linux_enterprise_software_development_kit |
| suse | linux enterprise workstation extension | cpe:2.3:o:suse:linux_enterprise_workstation_extension |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux6.0
- debian debian linux7.0
- debian debian linux8.0
- fedoraproject fedora19
- fedoraproject fedora20
- mariadb mariadb10.0.0 and later · before 10.0.13
- openssl openssl1.0.0 and later · up to 1.0.1g inclusive
- opensuse opensuse12.3
- opensuse opensuse13.1
- suse linux enterprise desktop12
- suse linux enterprise server12
- suse linux enterprise software development kit12
- suse linux enterprise workstation extension12
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | openssl | before 1.0.1g-4 | 1.0.1g-4 |
| Debian:7 | openssl | before 1.0.1e-2+deb7u9 | 1.0.1e-2+deb7u9 |
| Red Hat:enterprise_linux:6::client | openssl | before 0:1.0.1e-16.el6_5.14 | 0:1.0.1e-16.el6_5.14 |
| Red Hat:enterprise_linux:6::client | openssl-debuginfo | before 0:1.0.1e-16.el6_5.14 | 0:1.0.1e-16.el6_5.14 |
| Red Hat:enterprise_linux:6::client | openssl-devel | before 0:1.0.1e-16.el6_5.14 | 0:1.0.1e-16.el6_5.14 |
| Red Hat:enterprise_linux:6::client | openssl-perl | before 0:1.0.1e-16.el6_5.14 | 0:1.0.1e-16.el6_5.14 |
| Red Hat:enterprise_linux:6::client | openssl-static | before 0:1.0.1e-16.el6_5.14 | 0:1.0.1e-16.el6_5.14 |
| Red Hat:enterprise_linux:7::client | openssl | before 1:1.0.1e-34.el7_0.3 | 1:1.0.1e-34.el7_0.3 |
| Red Hat:enterprise_linux:7::client | openssl-debuginfo | before 1:1.0.1e-34.el7_0.3 | 1:1.0.1e-34.el7_0.3 |
| Red Hat:enterprise_linux:7::client | openssl-devel | before 1:1.0.1e-34.el7_0.3 | 1:1.0.1e-34.el7_0.3 |
| Red Hat:enterprise_linux:7::client | openssl-libs | before 1:1.0.1e-34.el7_0.3 | 1:1.0.1e-34.el7_0.3 |
| Red Hat:enterprise_linux:7::client | openssl-perl | before 1:1.0.1e-34.el7_0.3 | 1:1.0.1e-34.el7_0.3 |
| Red Hat:enterprise_linux:7::client | openssl-static | before 1:1.0.1e-34.el7_0.3 | 1:1.0.1e-34.el7_0.3 |
| SUSE:Linux Enterprise Desktop 12 | mariadb | before 10.0.16-15.1 | 10.0.16-15.1 |
Same product
openssl: all recordsOther highest-scoring records for the same primary product.
- CVE-2014-0160The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remKEV90Now
- CVE-2021-3711SM2 Decryption Buffer Overflow65This week
- CVE-2003-0545Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code 65This week
- CVE-2016-2108The ASN.1 implementation in OpenSSL before 1.0.1o and 1.0.2 before 1.0.2c allows remote attackers to execute arbitrary code or cause a denia62This week
- CVE-2016-6309statem/statem.c in OpenSSL 1.1.0a does not consider memory-block movement after a realloc call, which allows remote attackers to cause a den60This week
- CVE-2022-3786X.509 Email Address Variable Length Buffer Overflow58Plan
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 |
|---|---|---|
| debian:openssl | 1.0.1g-4 · Debian:12 | Package registry (OSV) |
| red hat:openssl | 0:1.0.1e-16.el6_5.14 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl-debuginfo | 0:1.0.1e-16.el6_5.14 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl-devel | 0:1.0.1e-16.el6_5.14 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl-libs | 1:1.0.1e-34.el7_0.3 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:openssl-perl | 0:1.0.1e-16.el6_5.14 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl-static | 0:1.0.1e-16.el6_5.14 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| suse:mariadb | 10.0.16-15.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
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.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
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.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
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
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
Technical details
Attack conditions
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- M
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
CWE-476 · NULL Pointer DereferenceCVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:P
nvd-primary
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.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- advisories.mageia.org/MGASA-2014-0204.html
- aix.software.ibm.com/aix/efixes/security/openssl_advisory9.asc
- kb.juniper.net/InfoCenter/index?page=content&id=JSA10629
- kb.juniper.net/InfoCenter/index?page=content&id=KB29195
- lists.fedoraproject.org/pipermail/package-announce/2014-August/136470.html
- lists.fedoraproject.org/pipermail/package-announce/2014-August/136473.html
- lists.opensuse.org/opensuse-security-announce/2015-04/msg00016.html
- lists.opensuse.org/opensuse-updates/2014-05/msg00036.html
- lists.opensuse.org/opensuse-updates/2014-05/msg00037.html
- marc.info/?l=bugtraq&m=140389274407904&w=2
- marc.info/?l=bugtraq&m=140389355508263&w=2
- marc.info/?l=bugtraq&m=140431828824371&w=2
- marc.info/?l=bugtraq&m=140448122410568&w=2
- marc.info/?l=bugtraq&m=140544599631400&w=2
- marc.info/?l=bugtraq&m=140621259019789&w=2
- marc.info/?l=bugtraq&m=140752315422991&w=2
- marc.info/?l=bugtraq&m=140904544427729&w=2
- marc.info/?l=bugtraq&m=141658880509699&w=2
- puppetlabs.com/security/cve/cve-2014-0198
- seclists.org/fulldisclosure/2014/Dec/23
Vendor advisories and official records. Exploit/PoC links are deliberately left out.