1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200507-21 / fetchmail |
| Release Date | July 25, 2005 |
| Latest Revision | July 25, 2005: 01 |
| Impact | normal |
| Exploitable | remote |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| net-mail/fetchmail | < 6.2.5.2 | >= 6.2.5.2 | All supported architectures |
Related bugreports: #99865
fetchmail is susceptible to a buffer overflow resulting in a Denial of Service or arbitrary code execution.
fetchmail is a utility that retrieves and forwards mail from remote systems using IMAP, POP, and other protocols.
fetchmail does not properly validate UIDs coming from a POP3 mail server. The UID is placed in a fixed length buffer on the stack, which can be overflown.
Very long UIDs returned from a malicious or compromised POP3 server can cause fetchmail to crash, resulting in a Denial of Service, or allow arbitrary code to be placed on the stack.
There are no known workarounds at this time.
All fetchmail users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=net-mail/fetchmail-6.2.5.2" |