CVE-2017-12178
9.8
CRITICAL · CVSS 3.0 · EPSS 4.4% (pctl 91)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
xorg-x11-server before 1.19.5 had wrong extra length check in ProcXIChangeHierarchy function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
Scoring
| CVSS | 9.8 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 4.42% — more likely to be exploited than 91% of all CVEs |
| Weakness | CWE-391 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2018-01-24 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| debian | debian linux |
| x.org | x server |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1509219
- https://cgit.freedesktop.org/xorg/xserver/commit/?id=859b08d523307eebde7724fd1a0789c44813e821
- https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html
- https://security.gentoo.org/glsa/201711-05
- https://www.debian.org/security/2017/dsa-4000
- https://bugzilla.redhat.com/show_bug.cgi?id=1509219
- https://cgit.freedesktop.org/xorg/xserver/commit/?id=859b08d523307eebde7724fd1a0789c44813e821
- https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html
- https://security.gentoo.org/glsa/201711-05
- https://www.debian.org/security/2017/dsa-4000
→ the Explorer · watch your stack · NVD