[ GLSA 200803-30 ] ssl-cert eclass: Certificate disclosure

[GLSA]

Gentoo Linux Security Advisory

Title: ssl-cert eclass: Certificate disclosure (GLSA 200803-30)
Severity: normal
Exploitable: remote
Date: March 20, 2008
Bug(s): #174759
ID: 200803-30

Synopsis

An error in the usage of the ssl-cert eclass within multiple ebuilds might allow for disclosure of generated SSL private keys.

Background

The ssl-cert eclass is a code module used by Gentoo ebuilds to generate SSL certificates.

Affected Packages

Package: app-admin/conserver
Vulnerable: < 8.1.16
Unaffected: >= 8.1.16
Architectures: All supported architectures

Package: mail-mta/postfix
Vulnerable: < 2.4.6-r2
Unaffected: >= 2.4.6-r2
Unaffected: >= 2.3.8-r1 < 2.3.9
Unaffected: >= 2.2.11-r1 < 2.2.12
Architectures: All supported architectures

Package: net-ftp/netkit-ftpd
Vulnerable: < 0.17-r7
Unaffected: >= 0.17-r7
Architectures: All supported architectures

Package: net-im/ejabberd
Vulnerable: < 1.1.3
Unaffected: >= 1.1.3
Architectures: All supported architectures

Package: net-irc/unrealircd
Vulnerable: < 3.2.7-r2
Unaffected: >= 3.2.7-r2
Architectures: All supported architectures

Package: net-mail/cyrus-imapd
Vulnerable: < 2.3.9-r1
Unaffected: >= 2.3.9-r1
Architectures: All supported architectures

Package: net-mail/dovecot
Vulnerable: < 1.0.10
Unaffected: >= 1.0.10
Architectures: All supported architectures

Package: net-misc/stunnel
Vulnerable: < 4.21-r1
Unaffected: >= 4.21-r1
Unaffected: < 4.0
Architectures: All supported architectures

Package: net-nntp/inn
Vulnerable: < 2.4.3-r1
Unaffected: >= 2.4.3-r1
Architectures: All supported architectures


Description

Robin Johnson reported that the docert() function provided by ssl-cert.eclass can be called by source building stages of an ebuild, such as src_compile() or src_install(), which will result in the generated SSL keys being included inside binary packages (binpkgs).

Impact

A local attacker could recover the SSL keys from publicly readable binary packages when " emerge " is called with the " --buildpkg (-b) " or " --buildpkgonly (-B) " option. Remote attackers can recover these keys if the packages are served to a network. Binary packages built using " quickpkg " are not affected.

Workaround

Do not use pre-generated SSL keys, but use keys that were generated using a different Certificate Authority.

Resolution

Upgrading to newer versions of the above packages will neither remove possibly compromised SSL certificates, nor old binary packages. Please remove the certificates installed by Portage, and then emerge an upgrade to the package. All Conserver users should upgrade to the latest version: