CVE-2016-7942
Summary
| CVE | CVE-2016-7942 |
|---|---|
| State | PUBLISHED |
| Assigner | microfocus |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2016-12-13 20:59:05 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| Description | The XGetImage function in X.org libX11 before 1.6.4 might allow remote X servers to gain privileges via vectors involving image type and geometry, which triggers out-of-bounds read operations. |
Risk And Classification
Primary CVSS: v3.0 9.8 CRITICAL from [email protected]
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.047120000 probability, percentile 0.894480000 (date 2026-05-11)
Problem Types: CWE-264 | CWE-787 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 9.8 | CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
PartialAvailability
PartialAV:N/AC:L/Au:N/C:P/I:P/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Fedoraproject | Fedora | 25 | All | All | All |
| Application | X.org | Libx11 | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| oss-security - Re: X.Org security advisory: Protocol handling issues in X Window System client libraries | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | |
| X.Org libX11 CVE-2016-7942 Memory Corruption Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| oss-security - X.Org security advisory: Protocol handling issues in X Window System client libraries | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | |
| USN-3758-2: libx11 vulnerabilities | Ubuntu security notices | af854a3a-2127-422b-91ae-364da2661108 | usn.ubuntu.com | |
| USN-3758-1: libx11 vulnerabilities | Ubuntu security notices | af854a3a-2127-422b-91ae-364da2661108 | usn.ubuntu.com | |
| [SECURITY] Fedora 25 Update: libX11-1.6.4-1.fc25 - package-announce - Fedora Mailing-Lists | af854a3a-2127-422b-91ae-364da2661108 | lists.fedoraproject.org | |
| xorg/lib/libX11 - libX11 GIT Repository | af854a3a-2127-422b-91ae-364da2661108 | cgit.freedesktop.org | |
| X.Org security advisory: Protocol handling issues in X Window System client libraries | af854a3a-2127-422b-91ae-364da2661108 | lists.x.org | |
| X Client Library Bugs Let Remote and Local Users Deny Service or Gain Elevated Privileges - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | |
| X.Org: Multiple vulnerabilities (GLSA 201704-03) — Gentoo Security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| [SECURITY] Fedora 25 Update: libX11-1.6.4-1.fc25 - package-announce - Fedora Mailing-Lists | MITRE | lists.fedoraproject.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 710339 Gentoo Linux X.Org Multiple Vulnerabilities (GLSA 201704-03)