CVE-2016-2851

high-risk
Published 2016-04-07

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.

Do I need to act?

!
23.1% chance of exploitation in next 30 days
EPSS score — higher than 77% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
39550
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (5)

Affected Vendors

Opensuse Debian Cypherpunks

References (22)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00021.html
Vendor Advisory http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00030.html
Exploit http://seclists.org/fulldisclosure/2016/Mar/21
Third Party Advisory http://www.debian.org/security/2016/dsa-3512
Third Party Advisory http://www.securityfocus.com/archive/1/537745/100/0/threaded
Third Party Advisory http://www.securityfocus.com/bid/84285
Third Party Advisory http://www.ubuntu.com/usn/USN-2926-1
Exploit https://lists.cypherpunks.ca/pipermail/otr-users/2016-March/002581.html
Third Party Advisory https://security.gentoo.org/glsa/201701-10
Third Party Advisory https://www.exploit-db.com/exploits/39550/
Exploit https://www.x41-dsec.de/lab/advisories/x41-2016-001-libotr/
Mailing List http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00021.html
Vendor Advisory http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00030.html
Exploit http://seclists.org/fulldisclosure/2016/Mar/21
Third Party Advisory http://www.debian.org/security/2016/dsa-3512
Third Party Advisory http://www.securityfocus.com/archive/1/537745/100/0/threaded
Third Party Advisory http://www.securityfocus.com/bid/84285
Third Party Advisory http://www.ubuntu.com/usn/USN-2926-1
Exploit https://lists.cypherpunks.ca/pipermail/otr-users/2016-March/002581.html
Third Party Advisory https://security.gentoo.org/glsa/201701-10
and 2 more references
58
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 14/34 · Moderate
Exposure 12/34 · Low