Description
Buffer overflow in Sendmail before 8.12.5, when configured to use a custom DNS map to query TXT records, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a malicious DNS server.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | sendmail | 8.12.5 | — |
| Debian 13 | sendmail | 8.12.5 | — |
| Debian 12 | sendmail | 8.12.5 | — |
References
- http://www.sendmail.org/8.12.5.html
- oval:org.mitre.oval:def:2183 vdb-entry signature
- VU#814627 third-party-advisory
- 5122 vdb-entry
- sendmail-dns-txt-bo(9443) vdb-entry