Multiple unspecified vulnerabilities in the DER decoder in GNU Libtasn1 before 3.6, as used in GnuTLS, allow remote attackers to cause a den
Multiple unspecified vulnerabilities in the DER decoder in GNU Libtasn1 before 3.6, as used in GnuTLS, allow remote attackers to cause a denial of service (out-of-bounds read) via crafted ASN.1 data.
- Published
- Jun 5, 2014
- Updated
- Jun 16, 2026
- EPSS
- 6.8% · 94th percentile
- CWE
- —
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 20 / 40 · 5.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 6.8%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| gnu | gnutls | cpe:2.3:a:gnu:gnutls |
| gnu | libtasn1 | cpe:2.3:a:gnu:libtasn1 |
| redhat | virtualization | cpe:2.3:a:redhat:virtualization |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| redhat | enterprise linux desktop | cpe:2.3:o:redhat:enterprise_linux_desktop |
| redhat | enterprise linux eus | cpe:2.3:o:redhat:enterprise_linux_eus |
| redhat | enterprise linux server | cpe:2.3:o:redhat:enterprise_linux_server |
| redhat | enterprise linux server aus | cpe:2.3:o:redhat:enterprise_linux_server_aus |
| redhat | enterprise linux server tus | cpe:2.3:o:redhat:enterprise_linux_server_tus |
| redhat | enterprise linux workstation | cpe:2.3:o:redhat:enterprise_linux_workstation |
| suse | linux enterprise desktop | cpe:2.3:o:suse:linux_enterprise_desktop |
| suse | linux enterprise high availability extension | cpe:2.3:o:suse:linux_enterprise_high_availability_extension |
and 4 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux7.0
- f5 arx firmware6.0.0 and later · up to 6.4.0 inclusive
- gnu gnutlsbefore 3.5.7
- gnu libtasn1before 3.6
- redhat enterprise linux desktop5.0
- redhat enterprise linux desktop6.0
- redhat enterprise linux desktop7.0
- redhat enterprise linux eus6.5
- redhat enterprise linux eus7.3
- redhat enterprise linux eus7.4
- redhat enterprise linux eus7.5
- redhat enterprise linux eus7.6
- redhat enterprise linux eus7.7
- redhat enterprise linux server5.0
- redhat enterprise linux server6.0
- redhat enterprise linux server7.0
- redhat enterprise linux server aus6.5
- redhat enterprise linux server aus7.3
- redhat enterprise linux server aus7.4
- redhat enterprise linux server aus7.6
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | libtasn1-6 | before 3.6-1 | 3.6-1 |
| Debian:6.0 | libtasn1-3 | before 2.7-1+squeeze+2 | 2.7-1+squeeze+2 |
| Debian:7 | libtasn1-3 | before 2.13-2+deb7u1 | 2.13-2+deb7u1 |
| openSUSE:Tumbleweed | libtasn1 | before 4.9-1.3 | 4.9-1.3 |
| Red Hat:enterprise_linux:5::client | gnutls | before 0:1.4.1-16.el5_10 | 0:1.4.1-16.el5_10 |
| Red Hat:enterprise_linux:5::client | gnutls-debuginfo | before 0:1.4.1-16.el5_10 | 0:1.4.1-16.el5_10 |
| Red Hat:enterprise_linux:5::client | gnutls-utils | before 0:1.4.1-16.el5_10 | 0:1.4.1-16.el5_10 |
| Red Hat:enterprise_linux:5::client_workstation | gnutls-devel | before 0:1.4.1-16.el5_10 | 0:1.4.1-16.el5_10 |
| Red Hat:enterprise_linux:6::client | libtasn1 | before 0:2.3-6.el6_5 | 0:2.3-6.el6_5 |
| Red Hat:enterprise_linux:6::client | libtasn1-debuginfo | before 0:2.3-6.el6_5 | 0:2.3-6.el6_5 |
| Red Hat:enterprise_linux:6::client | libtasn1-devel | before 0:2.3-6.el6_5 | 0:2.3-6.el6_5 |
| Red Hat:enterprise_linux:6::client | libtasn1-tools | before 0:2.3-6.el6_5 | 0:2.3-6.el6_5 |
| Red Hat:enterprise_linux:6::hypervisor | rhev-hypervisor6 | before 0:6.5-20140624.0.el6ev | 0:6.5-20140624.0.el6ev |
| Red Hat:enterprise_linux:7::client | libtasn1 | before 0:3.3-5.el7_0 | 0:3.3-5.el7_0 |
| Red Hat:enterprise_linux:7::client | libtasn1-debuginfo | before 0:3.3-5.el7_0 | 0:3.3-5.el7_0 |
| Red Hat:enterprise_linux:7::client | libtasn1-devel | before 0:3.3-5.el7_0 | 0:3.3-5.el7_0 |
| Red Hat:enterprise_linux:7::client | libtasn1-tools | before 0:3.3-5.el7_0 | 0:3.3-5.el7_0 |
Same product
gnu: all recordsOther highest-scoring records for the same primary product.
- CVE-2017-5334Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attacker49Plan
- CVE-2019-3829A vulnerability was found in gnutls versions from 3.5.8 before 3.6.7.48Plan
- CVE-2008-1948The _gnutls_server_name_recv_params function in lib/ext_server_name.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 does not properly c44Plan
- CVE-2017-5337Multiple heap-based buffer overflows in the read_attribute function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allow remote attackers to41Plan
- CVE-2017-5336Stack-based buffer overflow in the cdk_pk_get_keyid function in lib/opencdk/pubkey.c in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows r41Plan
- CVE-2021-20232A flaw was found in gnutls.40Plan
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:libtasn1-3 | 2.7-1+squeeze+2 · Debian:6.0 | Package registry (OSV) |
| debian:libtasn1-6 | 3.6-1 · Debian:12 | Package registry (OSV) |
| opensuse:libtasn1 | 4.9-1.3 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:gnutls | 0:1.4.1-16.el5_10 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:gnutls-debuginfo | 0:1.4.1-16.el5_10 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:gnutls-devel | 0:1.4.1-16.el5_10 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:gnutls-utils | 0:1.4.1-16.el5_10 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:libtasn1 | 0:2.3-6.el6_5 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:libtasn1-debuginfo | 0:2.3-6.el6_5 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:libtasn1-devel | 0:2.3-6.el6_5 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:libtasn1-tools | 0:2.3-6.el6_5 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:rhev-hypervisor6 | 0:6.5-20140624.0.el6ev · Red Hat:enterprise_linux:6::hypervisor | 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
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
—
CVSS vector
AV:N/AC:L/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-2014-0247.html
- linux.oracle.com/errata/ELSA-2014-0594.html
- linux.oracle.com/errata/ELSA-2014-0596.html
- lists.gnu.org/archive/html/help-libtasn1/2014-05/msg00006.html
- lists.opensuse.org/opensuse-security-announce/2014-06/msg00002.html
- lists.opensuse.org/opensuse-security-announce/2014-06/msg00015.html
- rhn.redhat.com/errata/RHSA-2014-0594.html
- rhn.redhat.com/errata/RHSA-2014-0596.html
- rhn.redhat.com/errata/RHSA-2014-0687.html
- rhn.redhat.com/errata/RHSA-2014-0815.html
- secunia.com/advisories/58591
- secunia.com/advisories/58614
- secunia.com/advisories/59021
- secunia.com/advisories/59057
- secunia.com/advisories/59408
- secunia.com/advisories/60320
- secunia.com/advisories/60415
- secunia.com/advisories/61888
- support.f5.com/kb/en-us/solutions/public/15000/400/sol15423.html
- www.debian.org/security/2014/dsa-3056
Vendor advisories and official records. Exploit/PoC links are deliberately left out.