CVE-2009-2624: Input Validation
First published: Thu Jul 30 2009(Updated: )
A missing input sanitation flaw was found in the way gzip used to decompress data blocks for dynamic Huffman codes. A remote attacker could provide a specially-crafted gzip compressed data archive, which once opened by a local, unsuspecting user would lead to denial of service (gzip crash) or, potentially, to arbitrary code execution with the privileges of the user running gzip. Upstream patch: --------------- <a href="http://git.savannah.gnu.org/cgit/gzip.git/commit/?id=39a362ae9d9b007473381dba5032f4dfc1744cf2">http://git.savannah.gnu.org/cgit/gzip.git/commit/?id=39a362ae9d9b007473381dba5032f4dfc1744cf2</a> CVE Note: --------- This flaw reportedly exists due to re-introduction of <a href="https://access.redhat.com/security/cve/CVE-2006-4334">CVE-2006-4334</a> issue: <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4334">http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4334</a> in upstream gzip version (originally fixed in gzip-v1.3.6, reintroduced later in gzip-v1.3.10 and fixed again with above commit -- in gzip-v.1.3.13). Credit: ------- Oulu University Secure Programming Group (OUSPG)
Credit: cret@cert.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| gzip | =1.3.1 | |
| gzip | =1.3.8 | |
| gzip | <=1.3.12 | |
| gzip | =1.3 | |
| gzip | =1.3.3 | |
| gzip | =1.3.11 | |
| gzip | =1.3.6 | |
| gzip | =1.3.2 | |
| gzip | =1.2.4 | |
| gzip | =1.3.10 | |
| gzip | =1.3.5 | |
| gzip | =1.3.7 | |
| gzip | =1.2.4a | |
| gzip | =1.3.9 | |
| gzip | =1.3.4 |
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Reference Links
- http://git.savannah.gnu.org/cgit/gzip.git/commit/?id=39a362ae9d9b007473381dba5032f4dfc1744cf2
- https://access.redhat.com/security/cve/CVE-2006-4334
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4334
- http://admin.fedoraproject.org/updates/gzip-1.3.12-14.fc12
- http://admin.fedoraproject.org/updates/gzip-1.3.12-10.fc11
- https://bugzilla.redhat.com/show_bug.cgi?id=514711
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00009.html
- http://secunia.com/advisories/38132
- http://www.ubuntu.com/usn/USN-889-1
- http://www.vupen.com/english/advisories/2010/0185
- http://secunia.com/advisories/38223
- http://secunia.com/advisories/38232
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:020
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=507263
- http://www.debian.org/security/2010/dsa-1974
- http://article.gmane.org/gmane.comp.gnu.gzip.bugs/258
- http://support.apple.com/kb/HT4435
- http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html
Frequently Asked Questions
What is the severity of CVE-2009-2624?
CVE-2009-2624 is categorized as a denial of service vulnerability due to a missing input sanitation flaw in gzip.
How do I fix CVE-2009-2624?
To fix CVE-2009-2624, upgrade to the latest version of gzip that addresses the vulnerability.
Which versions of gzip are affected by CVE-2009-2624?
Versions 1.3.1 to 1.3.12 of GNU gzip are affected by CVE-2009-2624.
What are the risks of not addressing CVE-2009-2624?
Not addressing CVE-2009-2624 may leave systems vulnerable to denial of service attacks leading to crashes.
How can I check if my system is vulnerable to CVE-2009-2624?
You can check if your system is vulnerable to CVE-2009-2624 by verifying the version of gzip installed on your system.
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- version/gnu gzip/1.3.10
- version/gnu gzip/1.3.11