CVE-2014-7817: Input Validation
First published: Mon Nov 24 2014(Updated: )
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 "$((`...`))".
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ubuntu | =10.04 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =14.10 | |
| Debian | =7.0 | |
| GNU C Library (glibc) | =2.21 | |
| SUSE Linux | =13.1 | |
| SUSE Linux | =13.2 |
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Reference Links
- 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
- 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.html
Frequently Asked Questions
What is the severity of CVE-2014-7817?
CVE-2014-7817 is classified as a high severity vulnerability due to the potential for arbitrary command execution.
How do I fix CVE-2014-7817?
To fix CVE-2014-7817, upgrade the GNU C Library to a version later than 2.21 that enforces the WRDE_NOCMD flag.
What systems are affected by CVE-2014-7817?
CVE-2014-7817 affects specific versions of Ubuntu, Debian, and openSUSE that use glibc 2.21.
Can CVE-2014-7817 be exploited remotely?
CVE-2014-7817 can be exploited locally by attackers with access to a vulnerable system.
What type of attack is possible with CVE-2014-7817?
CVE-2014-7817 allows context-dependent attackers to execute arbitrary commands through manipulating input to the wordexp function.
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- agent/software-canonical-lookup-request
- vendor/canonical
- canonical/ubuntu
- version/ubuntu/10.04
- version/ubuntu/12.04
- version/ubuntu/14.04
- version/ubuntu/14.10
- vendor/debian
- canonical/debian
- version/debian/7.0
- vendor/gnu
- canonical/gnu c library (glibc)
- version/gnu c library (glibc)/2.21
- vendor/opensuse
- canonical/suse linux
- version/suse linux/13.1
- version/suse linux/13.2