6.0Media
CVE-2026-42256net-imap: Denial of service via high iteration count for `SCRAM-*` authentication
Descripción
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. From versions 0.4.0 to before 0.4.24, 0.5.0 to before 0.5.14, and 0.6.0 to before 0.6.4, when authenticating a connection with SCRAM-SHA1 or SCRAM-SHA256, a hostile server can perform a computational denial-of-service attack on the client process by sending a big iteration count value. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.
Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.
Productos y versiones afectados
Referencias y parches
- https://github.com/ruby/net-imap/security/advisories/GHSA-87pf-fpwv-p7m7 MitigationVendor Advisory
- https://github.com/ruby/net-imap/commit/158d0b505074397cdb5ceb58935e42dd2bcfa612 Patch
- https://github.com/ruby/net-imap/commit/808001bc45c06f7297a7e96d341279e041a7f7f4 Patch
- https://github.com/ruby/net-imap/commit/99f59eab6064955a23debd95410263ad144df758 Patch
- https://github.com/ruby/net-imap/releases/tag/v0.4.24 Release Notes
- https://github.com/ruby/net-imap/releases/tag/v0.5.14 Release Notes
- https://github.com/ruby/net-imap/releases/tag/v0.6.4 Release Notes
Coincidencias CPE (NVD) (3)
cpe:2.3:a:ruby-lang:net\:\:imap:*:*:*:*:*:ruby:*:*≥ 0.4.0 < 0.4.24cpe:2.3:a:ruby-lang:net\:\:imap:*:*:*:*:*:ruby:*:*≥ 0.5.0 < 0.5.14cpe:2.3:a:ruby-lang:net\:\:imap:*:*:*:*:*:ruby:*:*≥ 0.6.0 < 0.6.4