ALT-PU-2021-2676-1
Closed vulnerabilities
Published: 2021-04-28
BDU:2021-04264
Уязвимость реализации класса Net::IMAP интерпретатора Ruby, позволяющая нарушителю реализовать атаку типа «человек посередине»
Severity: MEDIUM (6.5)
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
References:
Published: 2021-08-01
Modified: 2024-11-21
Modified: 2024-11-21
CVE-2021-32066
An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."
Severity: HIGH (7.4)
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
References:
- https://github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922a
- https://github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922a
- https://hackerone.com/reports/1178562
- https://hackerone.com/reports/1178562
- [debian-lts-announce] 20211013 [SECURITY] [DLA 2780-1] ruby2.3 security update
- [debian-lts-announce] 20211013 [SECURITY] [DLA 2780-1] ruby2.3 security update
- [debian-lts-announce] 20230430 [SECURITY] [DLA 3408-1] jruby security update
- [debian-lts-announce] 20230430 [SECURITY] [DLA 3408-1] jruby security update
- GLSA-202401-27
- GLSA-202401-27
- https://security.netapp.com/advisory/ntap-20210902-0004/
- https://security.netapp.com/advisory/ntap-20210902-0004/
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.ruby-lang.org/en/news/2021/07/07/starttls-stripping-in-net-imap/
- https://www.ruby-lang.org/en/news/2021/07/07/starttls-stripping-in-net-imap/