CVE-2015-3622
The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.5 allows remote attackers to cause a denial of service (out-of-bounds heap read) via a crafted certificate.
02 Description
The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.5 allows remote attackers to cause a denial of service (out-of-bounds heap read) via a crafted certificate.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 32.89% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 98.2% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2015-05-12 19:00Z11 YR AGO
- Last updated
- 2024-08-06 05:47Z2 YR AGO
- Reserved
- 2015-04-30
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 8dc3b6eff3197ab56139028ac8be57dec810554336dec88f37ae79619c5a1a65
05 Affected products
06 References
- security.gentoo.orgGLSA-201509-04https://security.gentoo.org/glsa/201509-04
- www.securitytracker.com1032246http://www.securitytracker.com/id/1032246
- lists.fedoraproject.orgFEDORA-2015-7288http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158225.html
- access.redhat.comRHSA-2017:1860https://access.redhat.com/errata/RHSA-2017:1860
- seclists.org20150430 Heap overflow / invalid read in Libtasn1 before 4.5 (TFPA 005/2015)http://seclists.org/fulldisclosure/2015/Apr/109
- www.debian.orgDSA-3256http://www.debian.org/security/2015/dsa-3256
- lists.gnu.org[help-libtasn1] 20150429 GNU Libtasn1 4.5 releasedhttps://lists.gnu.org/archive/html/help-libtasn1/2015-04/msg00000.html
- lists.opensuse.orgopenSUSE-SU-2016:1567http://lists.opensuse.org/opensuse-updates/2016-06/msg00047.html
- www.mandriva.comMDVSA-2015:232http://www.mandriva.com/security/advisories?name=MDVSA-2015:232
- lists.opensuse.orgopenSUSE-SU-2015:1372http://lists.opensuse.org/opensuse-updates/2015-08/msg00014.html
- packetstormsecurity.comhttp://packetstormsecurity.com/files/131711/libtasn1-Heap-Overflow.html
- www.securityfocus.com74419http://www.securityfocus.com/bid/74419
- lists.opensuse.orgopenSUSE-SU-2016:1674http://lists.opensuse.org/opensuse-updates/2016-06/msg00097.html
- www.ubuntu.comUSN-2604-1http://www.ubuntu.com/usn/USN-2604-1
07 Fixed in
Debian 12
- libtasn1-6 Fixed in 4.4-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- libtasn1-6 Fixed in 4.4-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- libtasn1-6 Fixed in 4.4-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- libtasn1-6 Fixed in 3.4-3ubuntu0.3
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.