Vulnerability in Gnu Libtasn1
CVE-2016-4008
The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.8, when used without the ASN1_DECODE_FLAG_STRICT_DER flag, allows remote attackers to cause a denial of service (infinite recursion) via a crafted certificate.
EPSS: 0.043 (89.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Gnu Libtasn1
- Canonical Ubuntu_linux — versions 12.04, 14.04, 15.10
- Fedoraproject Fedora — versions 22, 23, 24
- Opensuse — versions 13.2
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- GLSA-201703-05 (vendor-advisory, x_refsource_GENTOO)
- FEDORA-2016-048ffb6235 (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_CONFIRM)
- USN-2957-2 (x_refsource_UBUNTU, vendor-advisory)
- FEDORA-2016-383b8250e6 (x_refsource_FEDORA, vendor-advisory)
- openSUSE-SU-2016:1567 (vendor-advisory, x_refsource_SUSE)
- [help-libtasn1] 20160411 GNU Libtasn1 4.8 released (mailing-list, x_refsource_MLIST)
- cve@mitre.org (x_refsource_CONFIRM)
- DSA-3568 (vendor-advisory, x_refsource_DEBIAN)
- openSUSE-SU-2016:1674 (vendor-advisory, x_refsource_SUSE)
Frequently asked questions
- What is CVE-2016-4008?
- CVE-2016-4008 is a medium-severity vulnerability in Gnu Libtasn1, classified under CWE-399. CVSS score: 5.9/10. Published 2016-05-05.
- How severe is CVE-2016-4008?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2016-4008 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.