Irssi Multiple Vulnerabilities Leading to Remote DoS (CVE-2017-15228/15227/15721/15723/15722)

Key Information Summary Vulnerability Overview Description: Multiple vulnerabilities exist in Irssi. CVE IDs: CVE-2017-15228, CVE-2017-15227, CVE-2017-15721, CVE-2017-15723, CVE-2017-15722 Vulnerability Details 1. Unterminated Color Formatting Sequences: - Issue: Installing themes containing unterminated color formatting sequences may cause Irssi to access data beyond the end of a string. - Impact: Could lead to denial of service (remote crash). - CVE: CVE-2017-15228 - Affected Versions: All observed Irssi versions. - Fixed Version: Irssi 1.0.5 2. Channel Sync Issue: - Issue: Irssi fails to properly remove destroyed channels from the query list while waiting for channel sync. - Impact: Could lead to denial of service (remote crash). - CVE: CVE-2017-15227 - Affected Versions: All observed Irssi versions. - Fixed Version: Irssi 1.0.5 3. Malformed DCC CTCP Messages: - Issue: Certain malformed DCC CTCP messages may trigger a null pointer dereference. - Impact: Could lead to denial of service (remote crash). - CVE: CVE-2017-15721 - Affected Versions: All observed Irssi versions. - Fixed Version: Irssi 1.0.5 4. Excessively Long Nicknames or Targets: - Issue: Excessively long nicknames or targets may trigger a null pointer dereference. - Impact: Could lead to denial of service (remote crash). - CVE: CVE-2017-15723 - Affected Versions: Irssi 0.8.17 and above. - Fixed Version: Irssi 1.0.5 5. Failed Secure Channel ID Validation: - Issue: In certain cases, Irssi may fail to validate sufficiently long secure channel IDs, leading to reading beyond the end of a string. - Impact: Could affect Irssi's stability. - CVE: CVE-2017-15722 - Affected Versions: All observed Irssi versions. - Fixed Version: Irssi 1.0.5 Impact and Recommended Actions Impact: May result in denial of service or affect Irssi's stability. Recommended Action: Upgrade to Irssi 1.0.5. Mitigation: Some vulnerabilities require specific conditions (e.g., malicious themes, corrupted IRC servers, or control over IRC servers). Patch: Patch Link

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Irssi Multiple Vulnerabilities Leading to Remote DoS (CVE-2017-15228/15227/15721/15723/15722)