Buffer overflow in Cypherpunks Libotr
CVE-2016-2851
Integer overflow in proto.c in libotr before 4.1.1 on 64-bit platforms allows remote attackers to cause a denial of service (memory corruption and application crash) or execute arbitrary code via a series of large OTR messages, which triggers a heap-based buffer overflow.
Vulnerability class: Buffer Overflow
EPSS: 0.254 (97.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Cypherpunks Libotr
- Debian Debian_linux — versions 7.0, 8.0
- Opensuse Leap — versions 42.1
- Opensuse — versions 13.2
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, x_refsource_BUGTRAQ, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- cve@mitre.org (VDB Entry, Third Party Advisory, exploit, x_refsource_EXPLOIT-DB)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@mitre.org (mailing-list, Exploit, x_refsource_FULLDISC, Mailing List, Third Party Advisory)
- cve@mitre.org (Exploit, x_refsource_MISC)
- cve@mitre.org (vendor-advisory, Mailing List, x_refsource_SUSE)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Exploit)
Frequently asked questions
- What is CVE-2016-2851?
- CVE-2016-2851 is a critical-severity vulnerability in Cypherpunks Libotr, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2016-04-07.
- How severe is CVE-2016-2851?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2016-2851 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.