Red Hat Security Advisory: ruby security update
Multiple security vulnerabilities have been identified in the Ruby programming language's Net::IMAP library, including denial of service via crafted IMAP responses, IMAP command injection through symbol arguments, and information disclosure by bypassing TLS via man-in-the-middle attacks. These issues affect Red Hat Enterprise Linux 10 and related products. Red Hat has issued a security advisory with updates to address these vulnerabilities.
AI Analysis
Technical Summary
This advisory covers three vulnerabilities in Ruby's Net::IMAP library: CVE-2026-42245 allows denial of service through crafted IMAP responses; CVE-2026-42258 enables IMAP command injection via symbol arguments; and CVE-2026-42246 permits information disclosure by bypassing TLS protections through man-in-the-middle attacks. Red Hat has released updated Ruby packages for Red Hat Enterprise Linux 10 and related distributions to remediate these issues.
Potential Impact
Successful exploitation of these vulnerabilities could result in denial of service conditions, unauthorized command injection within IMAP sessions, and exposure of sensitive information due to TLS bypass. These impacts could affect applications relying on Ruby's Net::IMAP functionality on affected Red Hat Enterprise Linux 10 systems.
Mitigation Recommendations
Red Hat has released updated Ruby packages that address these vulnerabilities. Users of Red Hat Enterprise Linux 10 and related products should apply the provided security updates as detailed in Red Hat advisory RHSA-2026:33565. For update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official patches.
Red Hat Security Advisory: ruby security update
Description
Multiple security vulnerabilities have been identified in the Ruby programming language's Net::IMAP library, including denial of service via crafted IMAP responses, IMAP command injection through symbol arguments, and information disclosure by bypassing TLS via man-in-the-middle attacks. These issues affect Red Hat Enterprise Linux 10 and related products. Red Hat has issued a security advisory with updates to address these vulnerabilities.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers three vulnerabilities in Ruby's Net::IMAP library: CVE-2026-42245 allows denial of service through crafted IMAP responses; CVE-2026-42258 enables IMAP command injection via symbol arguments; and CVE-2026-42246 permits information disclosure by bypassing TLS protections through man-in-the-middle attacks. Red Hat has released updated Ruby packages for Red Hat Enterprise Linux 10 and related distributions to remediate these issues.
Potential Impact
Successful exploitation of these vulnerabilities could result in denial of service conditions, unauthorized command injection within IMAP sessions, and exposure of sensitive information due to TLS bypass. These impacts could affect applications relying on Ruby's Net::IMAP functionality on affected Red Hat Enterprise Linux 10 systems.
Mitigation Recommendations
Red Hat has released updated Ruby packages that address these vulnerabilities. Users of Red Hat Enterprise Linux 10 and related products should apply the provided security updates as detailed in Red Hat advisory RHSA-2026:33565. For update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:33565
- Cve Count
- 3
- Additional Cves
- ["CVE-2026-42246","CVE-2026-42258"]
- Cvss Version
- null
Threat ID: 6a4452de27e9c797198e093f
Added to database: 06/30/2026, 23:35:58 UTC
Last enriched: 06/30/2026, 23:44:38 UTC
Last updated: 07/01/2026, 02:51:10 UTC
Views: 2
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