SB2020080305 - Remote code execution in Claws Mail
Published: August 3, 2020
Security Bulletin ID
SB2020080305
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2020-15917)
The vulnerability allows a remote attacker to execute arbitrary code on the system
The vulnerability exists due to a protocol violation in "common/session.c "file when suffix data after STARTTLS is mishandled. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00090.html
- https://git.claws-mail.org/?p=claws.git;a=blob;f=RELEASE_NOTES
- https://git.claws-mail.org/?p=claws.git;a=commit;h=fcc25329049b6f9bd8d890f1197ed61eb12e14d5
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6YVQB7NRBHO67Q74RS7RZCMW4ENRVBB4/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G7UX65342HRVDQML4G4GEVEUB764EUM5/
- https://security.gentoo.org/glsa/202007-56