Title: libSieve IMAP Flag Buffer Overrun Vulnerability
Severity: HIGH
Description:
Sieve is a language that can be used to create filters for electronic mail. It is operating system independant. A vulnerability has been discovered in the Sieve library, used by various software programs.
A buffer overflow condition exists in libSieve when processing IMAP flags. This is due to insufficient bounds checking of user-supplied input. By passing a malicious IMAP flag, containing 100 or more bytes of data, to an IMAP server linked with libSieve it is possible overrun a buffer.
Exploiting this issue may allow an attacker to corrupt sensitive memory. By overwriting memory with malicious values, it may be possible for an attacker to execute arbitrary system commands with privileges of the vulnerable program.
Affected Products:
- Carnegie Mellon University Cyrus IMAP Server 2.1.10
- Cyrusoft libSieve 2.1.2
Juniper Networks provides this content via a wide variety of sources and production methods. If notified of errors or omissions in the content of this page, Juniper Networks, at its discretion, will modify or remove the page or leave the content as is, depending on various factors including but not limited to the reputation and authority of the party providing the notification. Please use the contact information displayed elsewhere on this page to report any errors or omissions regarding the content on this page.
