Buffer overflow in GNU Libtasn1
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.329 (98.3th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.329 · newest: 0.329 · change: 0.000
Affected products
- GNU Libtasn1
- Fedoraproject Fedora — versions 21
- openSUSE — versions 13.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.gentoo.org/glsa/201509-04 (vendor-advisory)
- www.securitytracker.com/id/1032246 (vdb-entry)
- lists.fedoraproject.org/pipermail/package-announce/2015-May/158225.html (vendor-advisory)
- access.redhat.com/errata/RHSA-2017:1860 (vendor-advisory)
- seclists.org/fulldisclosure/2015/Apr/109 (mailing-list, Exploit)
- www.debian.org/security/2015/dsa-3256 (vendor-advisory)
- lists.gnu.org/archive/html/help-libtasn1/2015-04/msg00000.html (mailing-list)
- lists.opensuse.org/opensuse-updates/2016-06/msg00047.html (vendor-advisory)
- www.mandriva.com/security/advisories (vendor-advisory)
- lists.opensuse.org/opensuse-updates/2015-08/msg00014.html (vendor-advisory)
Frequently asked questions
- What is CVE-2015-3622?
- CVE-2015-3622 is a vulnerability in GNU Libtasn1, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2015-05-12.
- Is CVE-2015-3622 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.