CVE-2003-1177 describes a buffer overflow vulnerability in the base64 decoder of MERCUR Mailserver versions 4.2 prior to SP3a. This flaw allows remote attackers to trigger a denial of service and potentially execute arbitrary code by sending an excessively long AUTH command to the POP3 server or an AUTHENTICATE command to the IMAP server. With a CVSS score of 7.5, this vulnerability is considered highly severe, requiring no authentication and having a low attack complexity, impacting confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, exploit code is publicly available on ExploitDB, and the vulnerability has garnered significant community discussion, indicating awareness and potential for exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
3.3CPE matchmatch criteria | cpe:2.3:a:atrium_software:mercur_mailserver:3.3:*:*:*:*:*:*:* | ||
3.3_sp1CPE matchmatch criteria | cpe:2.3:a:atrium_software:mercur_mailserver:3.3_sp1:*:*:*:*:*:*:* | ||
3.3_sp2CPE matchmatch criteria | cpe:2.3:a:atrium_software:mercur_mailserver:3.3_sp2:*:*:*:*:*:*:* | ||
4.1CPE matchmatch criteria | cpe:2.3:a:atrium_software:mercur_mailserver:4.1:*:*:*:*:*:*:* | ||
4.1_sp1CPE matchmatch criteria | cpe:2.3:a:atrium_software:mercur_mailserver:4.1_sp1:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:P
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.