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Fencer Vulns
high 7.5

CVE-2017-12836 json

CVS 1.12.x, when configured to use SSH for remote repositories, might allow remote attackers to execute arbitrary code via a repository URL…

published 2017-08-24 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-4373

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.6%
EPSS 6.6% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

CVS 1.12.x, when configured to use SSH for remote repositories, might allow remote attackers to execute arbitrary code via a repository URL with a crafted hostname, as demonstrated by "-oProxyCommand=id;localhost:/bar."

Patch / fix

  • cvs Debian 14, Debian 13, Debian 12 2:1.12.13+real-24

debian advisories DEBIAN-CVE-2017-12836

  • cvs Ubuntu 14.04 LTS 2:1.12.13+real-12ubuntu0.1
  • cvs Ubuntu 16.04 LTS 2:1.12.13+real-15ubuntu0.1

ubuntu advisories UBUNTU-CVE-2017-12836

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • cvs SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2 +4 more 1.12.12-182.3.1
  • cvs SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 1.12.12-144.23.5.3.1

suse advisories SUSE-SU-2017:2419-1SUSE-SU-2017:2422-1

  • cvs openSUSE Tumbleweed 1.12.13-1.14

opensuse advisories openSUSE-SU-2024:10708-1

  • cvs Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 1.12.12-r0

alpine advisories ALPINE-CVE-2017-12836

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-12836 updated cvss 5.0

cvs: Command injection via malicious ssh URLs

  • Red Hat Enterprise Linux 5 cvs Red Hat Enterprise Linux 6 cvs Red Hat Enterprise Linux 7 cvs, cvs-inetd, cvs-contrib
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

6.64% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • openwall.com http://www.openwall.com/lists/oss-security/2017/08/11/1 referenced PoC, tagged "exploit" by a source, unverified
  • lists.nongnu.org http://lists.nongnu.org/archive/html/bug-cvs/2017-08/msg00000.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.