Input validation error in fossil - CVE-2017-17459
Published: December 7, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU37775
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-17459
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
http_transport.c in Fossil before 2.4, when the SSH sync protocol is used, allows user-assisted remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, a related issue to CVE-2017-9800, CVE-2017-12836, CVE-2017-12976, CVE-2017-14176, CVE-2017-16228, CVE-2017-1000116, and CVE-2017-1000117.
Affected software
fossil
Gentoo Linux
Fedora
fossil
Gentoo Linux
Fedora
fossil
How to mitigate CVE-2017-17459
Install update from vendor's website.
fossil - update to 2.4
fossil - update to 2.8-1.fc30
fossil - update to 2.8-1.fc30
External References
- https://bugzilla.opensuse.org/show_bug.cgi?id=1071709
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BLAFCQGE7C5UMX75LESNUMKTXTURUVQM/
- https://www.fossil-scm.org/xfer/doc/trunk/www/changes.wiki#v2_4
- https://www.fossil-scm.org/xfer/info/1f63db591c77108c