CVE-2023-42116
Fixed in a distro release EPSS 4%CVSS 8.1
Exim SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code 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 the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. . Was ZDI-CAN-17515.
Products: exim
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | exim | 4.96.1-r0 |
| Chainguard | exim-cdb | 4.96.1-r0 |
| Chainguard | exim-dbmdb | 4.96.1-r0 |
| Chainguard | exim-dnsdb | 4.96.1-r0 |
| Chainguard | exim-doc | 4.96.1-r0 |
| Chainguard | exim-mysql | 4.96.1-r0 |
| Chainguard | exim-pgsql | 4.96.1-r0 |
| Chainguard | exim-scripts | 4.96.1-r0 |
| Chainguard | exim-sqlite | 4.96.1-r0 |
| Chainguard | exim-utils | 4.96.1-r0 |
| Debian 10 | exim4 | 4.92-8+deb10u8 |
| Debian 11 | exim4 | 4.94.2-7+deb11u1 |
| Debian 12 | exim4 | 4.96-15+deb12u2 |
| Debian 13 | exim4 | 4.97~RC1-2 |
| Debian 14 | exim4 | 4.97~RC1-2 |
| SUSE Package Hub 15 SP4 | exim | 4.94.2-bp155.5.3.1 |
| SUSE Package Hub 15 SP5 | exim | 4.94.2-bp155.5.3.1 |
| SUSE Package Hub 15 SP5 | exim | 4.97.1-bp155.5.9.1 |
| Ubuntu 20.04 LTS | exim4 | 4.93-13ubuntu1.8 |
| Ubuntu 22.04 LTS | exim4 | 4.95-4ubuntu2.3 |
| Ubuntu Pro 14.04 LTS | exim4 | 4.82-3ubuntu2.4+esm6 |
| Ubuntu Pro 16.04 LTS | exim4 | 4.86.2-2ubuntu2.6+esm4 |
| Ubuntu Pro 18.04 LTS | exim4 | 4.90.1-1ubuntu1.10+esm1 |
| Wolfi | exim | 4.96.1-r0 |
| Wolfi | exim-cdb | 4.96.1-r0 |
| Wolfi | exim-dbmdb | 4.96.1-r0 |
| Wolfi | exim-dnsdb | 4.96.1-r0 |
| Wolfi | exim-doc | 4.96.1-r0 |
| Wolfi | exim-mysql | 4.96.1-r0 |
| Wolfi | exim-pgsql | 4.96.1-r0 |
| Wolfi | exim-scripts | 4.96.1-r0 |
| Wolfi | exim-sqlite | 4.96.1-r0 |
| Wolfi | exim-utils | 4.96.1-r0 |
| openSUSE Leap 15.4 | exim | 4.94.2-bp155.5.3.1 |
| openSUSE Leap 15.5 | exim | 4.97.1-bp155.5.9.1 |
| openSUSE Leap 15.5 | exim | 4.94.2-bp155.5.3.1 |
| openSUSE Tumbleweed | exim | 4.96.1-1.1 |