Description
OpenSMTPD before 5.3.2 does not properly handle SSL sessions, which allows remote attackers to cause a denial of service (connection blocking) by keeping a connection open.
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 | opensmtpd | 5.3.3p1-1 | — |
| Debian 13 | opensmtpd | 5.3.3p1-1 | — |
| Debian 12 | opensmtpd | 5.3.3p1-1 | — |
References
- [oss-security] 20130518 CVE Request: DoS in OpenSMTPD TLS Support mailing-list
- http://git.zx2c4.com/OpenSMTPD/commit/?id=38b26921bad5fe24ad747bf9d591330d683728b0
- 53353 third-party-advisory
- opensmtpd-cve20132125-dos(84388) vdb-entry
- [oss-security] 20130518 Re: Re: CVE Request: DoS in OpenSMTPD TLS Support mailing-list
- 93495 vdb-entry