Mastodon: Unwanted deactivation of SSL/TLS certificate verification
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.4epss 0.3%
exploitation probability
0.3%top 72% of all CVEs
observed exploitation
nono source reports it
Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.4.19 and from 4.5.0 until 4.5.12, Mastodon's app/models/concerns/user/ldap_authenticable.rb mutates OpenSSL::SSL::SSLContext::DEFAULT_PARAMS when LDAP authentication uses LDAP_TLS_NO_VERIFY=true, disabling SSL and TLS certificate verification globally for requests made by puma web processes while sidekiq background jobs remain unaffected. This issue is fixed in versions 4.4.19 and 4.5.12.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products
mastodon · mastodonReferences
https://github.com/mastodon/mastodon/commit/2ccb6ef277e725d1932295690cf8ab9d3dc03149https://github.com/mastodon/mastodon/commit/5748d0b16ea09001e0933f76c7afe814e09652efhttps://github.com/mastodon/mastodon/commit/761c61b42590a2fd91442fc15a0a7583e48bbea4https://github.com/mastodon/mastodon/pull/39571https://github.com/mastodon/mastodon/releases/tag/v4.4.19https://github.com/mastodon/mastodon/releases/tag/v4.5.12https://github.com/mastodon/mastodon/security/advisories/GHSA-3rhr-8phh-jm86