CVE-2014-7817
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 "$((`...`))".
Does this matter?
Lower severity and a low EPSS score (0.58%). Track it; it rarely justifies an emergency change on its own.
Description
The wordexp function in GNU C Library (aka glibc) 2.21 does not enforce the WRDE_NOCMD flag, which allows context-dependent attackers to execute arbitrary commands, as demonstrated by input containing "$((`...`))".
- CVSS 2.0
- 4.6 MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 0.58% probability · 47th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- canonical/ubuntu linux · debian/debian linux · gnu/glibc · opensuse/opensuse
- Source
- secalert@redhat.com
EPSS 0.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://linux.oracle.com/errata/ELSA-2015-0016.html
- http://linux.oracle.com/errata/ELSA-2015-0092.htmlVendor Advisory
- http://lists.opensuse.org/opensuse-updates/2015-02/msg00089.htmlVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2014-2023.htmlVendor Advisory
- 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-3142Vendor Advisory
- 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
- https://exchange.xforce.ibmcloud.com/vulnerabilities/98852
- https://security.gentoo.org/glsa/201602-02
- https://sourceware.org/bugzilla/show_bug.cgi?id=17625
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commitdiff%3Bh=a39208bd7fb76c1b01c127b4c61f9bfd915bfe7c
- https://sourceware.org/ml/libc-alpha/2014-11/msg00519.htmlVendor Advisory
- http://linux.oracle.com/errata/ELSA-2015-0016.html
- http://linux.oracle.com/errata/ELSA-2015-0092.htmlVendor Advisory
- http://lists.opensuse.org/opensuse-updates/2015-02/msg00089.htmlVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2014-2023.htmlVendor Advisory
- 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-3142Vendor Advisory
- 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
- https://exchange.xforce.ibmcloud.com/vulnerabilities/98852
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.