Vulnerability Description
Multiple buffer overflows in Exim before 4.43 may allow attackers to execute arbitrary code via (1) an IPv6 address with more than 8 components, as demonstrated using the -be command line option, which triggers an overflow in the host_aton function, or (2) the -bh command line option or dnsdb PTR lookup, which triggers an overflow in the dns_build_reverse function.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| University Of Cambridge | Exim | <= 4.40 |
References
- http://ftp6.us.freebsd.org/pub/mail/exim/ChangeLogs/ChangeLog-4.44
- http://security.gentoo.org/glsa/glsa-200501-23.xmlVendor Advisory
- http://www.debian.org/security/2005/dsa-635Vendor Advisory
- http://www.debian.org/security/2005/dsa-637Vendor Advisory
- http://www.exim.org/mail-archives/exim-users/Week-of-Mon-20050103/msg00028.html
- http://www.idefense.com/application/poi/display?id=179&type=vulnerabilitiesVendor Advisory
- http://www.idefense.com/application/poi/display?id=183&type=vulnerabilitiesExploitVendor Advisory
- http://www.kb.cert.org/vuls/id/132992PatchUS Government Resource
- http://www.redhat.com/support/errata/RHSA-2005-025.htmlPatch
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3
- http://ftp6.us.freebsd.org/pub/mail/exim/ChangeLogs/ChangeLog-4.44
- http://security.gentoo.org/glsa/glsa-200501-23.xmlVendor Advisory
- http://www.debian.org/security/2005/dsa-635Vendor Advisory
- http://www.debian.org/security/2005/dsa-637Vendor Advisory
- http://www.exim.org/mail-archives/exim-users/Week-of-Mon-20050103/msg00028.html
FAQ
What is CVE-2005-0021?
CVE-2005-0021 is a vulnerability with a CVSS score of 7.2 (HIGH). Multiple buffer overflows in Exim before 4.43 may allow attackers to execute arbitrary code via (1) an IPv6 address with more than 8 components, as demonstrated using the -be command line option, whic...
How severe is CVE-2005-0021?
CVE-2005-0021 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2005-0021?
Check the references section above for vendor advisories and patch information. Affected products include: University Of Cambridge Exim.