Integer overflow in X.org Libxfixes
CVE-2016-7944
Integer overflow in X.org libXfixes before 5.0.3 on 32-bit platforms might allow remote X servers to gain privileges via a length value of INT_MAX, which triggers the client to stop reading data and get out of sync.
Vulnerability class: Integer Overflow
EPSS: 0.034 (87.6th 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
- X.org Libxfixes
- Fedoraproject Fedora — versions 24, 25
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@opentext.com (vdb-entry, x_refsource_SECTRACK)
- security@opentext.com (vdb-entry, x_refsource_BID)
- security@opentext.com (vendor-advisory, x_refsource_GENTOO)
- security@opentext.com (mailing-list, x_refsource_MLIST)
- security@opentext.com (vendor-advisory, x_refsource_FEDORA)
- security@opentext.com (mailing-list, x_refsource_MLIST)
- security@opentext.com (vendor-advisory, x_refsource_FEDORA)
- security@opentext.com (mailing-list, x_refsource_MLIST)
- security@opentext.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2016-7944?
- CVE-2016-7944 is a critical-severity vulnerability in X.org Libxfixes, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2016-12-13.
- How severe is CVE-2016-7944?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2016-7944 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.