Exim NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Exim. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of NTLM challenge requests. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated data structure. An attacker can leverage this vulnerability to disclose information in the context of the service account. . Was ZDI-CAN-17433.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
- CVSS 3.0 Base Score: 3.7
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade exim | Aug 22, 2024 | May 3, 2024 |
| Debian | — | Upgrade exim4 | Oct 4, 2023 | Oct 4, 2023 |
| Exim | — | Upgrade Exim to version 4.96.1 | Apr 7, 2026 | May 3, 2024 |
| Gentoo Linux | — | Upgrade mail-mta/exim. | Feb 19, 2024 | Feb 18, 2024 |
| Suse | — | Upgrade eximstats-htmlUpgrade eximonUpgrade exim | Oct 6, 2023 | Oct 5, 2023 |
| Ubuntu | — | Upgrade eximon4Upgrade exim4-baseUpgrade exim4-daemon-light (Ubuntu Pro)Upgrade exim4Upgrade exim4 (Ubuntu Pro)Upgrade exim4-daemon-lightUpgrade exim4-daemon-heavy (Ubuntu Pro)Upgrade exim4-daemon-heavyUpgrade exim4-base (Ubuntu Pro)Upgrade eximon4 (Ubuntu Pro) | Oct 6, 2023 | Oct 4, 2023 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub