CVE-2017-12836
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."
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.64%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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."
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 6.64% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- gnu/cvs · canonical/ubuntu linux · debian/debian linux
- Source
- cve@mitre.org
EPSS moved from 8.5% on 21 September 2026 to 6.6% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://lists.nongnu.org/archive/html/bug-cvs/2017-08/msg00000.htmlExploit, Mailing List, Vendor Advisory
- http://www.debian.org/security/2017/dsa-3940Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/08/11/1Exploit, Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/08/11/4Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/100279Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3399-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1480800Issue Tracking, Patch, Third Party Advisory, VDB Entry
- https://security.gentoo.org/glsa/201709-17Third Party Advisory
- http://lists.nongnu.org/archive/html/bug-cvs/2017-08/msg00000.htmlExploit, Mailing List, Vendor Advisory
- http://www.debian.org/security/2017/dsa-3940Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/08/11/1Exploit, Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/08/11/4Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/100279Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3399-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1480800Issue Tracking, Patch, Third Party Advisory, VDB Entry
- https://security.gentoo.org/glsa/201709-17Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.