CVE-2014-7817

Severity: medium (CVSS 4.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-11-24 · updated 2026-06-17
Weakness: CWE-20

Description

The wordexp function in GNU C Library (aka glibc) 2.21 does not enforce the WRDE_NOCMD flag, which allows context-dependent attackers to execute arbitrary commands, as demonstrated by input containing "$((`...`))".

Affected products

Canonical Ubuntu Linux: 10.04, 12.04, 14.04, 14.10
Debian Linux: 7.0
GNU C Library (glibc): 2.21
Opensuse: 13.1, 13.2

References

http://linux.oracle.com/errata/ELSA-2015-0016.html
http://linux.oracle.com/errata/ELSA-2015-0092.html
http://lists.opensuse.org/opensuse-updates/2015-02/msg00089.html
http://rhn.redhat.com/errata/RHSA-2014-2023.html
http://seclists.org/oss-sec/2014/q4/730
http://secunia.com/advisories/62100
http://secunia.com/advisories/62146
http://www.debian.org/security/2015/dsa-3142
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
http://www.securityfocus.com/bid/71216
http://www.ubuntu.com/usn/USN-2432-1

Get alerted when CVE-2014-7817 or the next vulnerability affects your stack