CVE-2016-7943
critical
CVSS v3
9.8
CVSS v2
7.5
VIR risk
9.8
Description
The XListFonts function in X.org libX11 before 1.6.4 might allow remote X servers to gain privileges via vectors involving length fields, which trigger out-of-bounds write operations.
Predictions
Exploit likelihood
97%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2016-7943
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 2:1.6.4-1 |
| debian | bullseye | fixed | 2:1.6.4-1 |
| debian | forky | fixed | 2:1.6.4-1 |
| debian | sid | fixed | 2:1.6.4-1 |
| debian | trixie | fixed | 2:1.6.4-1 |
| fedora | 25 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| x.org | libx11 | {"endIncluding":"1.6.3"} | |
References
- http://www.openwall.com/lists/oss-security/2016/10/04/2
- http://www.openwall.com/lists/oss-security/2016/10/04/4
- http://www.securityfocus.com/bid/93362
- http://www.securitytracker.com/id/1036945
- https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=8c29f1607a31dac0911e45a0dd3d74173822b3c9
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMCVDXMFPXR7QGMKDG22WPPJCXH2X3L7/
- https://lists.x.org/archives/xorg-announce/2016-October/002720.html
- https://security.gentoo.org/glsa/201704-03
- https://usn.ubuntu.com/3758-1/
- https://usn.ubuntu.com/3758-2/
- https://security-tracker.debian.org/tracker/CVE-2016-7943
CWEs
CWE-787
Verify integrity in audit chain (admin only). AS-IS.