CVE-2023-42115: (0Day) Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability
First published: Thu Sep 28 2023(Updated: )
[Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability]
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Exim Exim | ||
| ubuntu/exim4 | <4.96.1 | 4.96.1 |
| ubuntu/exim4 | <4.93-13ubuntu1.8 | 4.93-13ubuntu1.8 |
| ubuntu/exim4 | <4.95-4ubuntu2.3 | 4.95-4ubuntu2.3 |
| ubuntu/exim4 | <4.96-14ubuntu1.2 | 4.96-14ubuntu1.2 |
| ubuntu/exim4 | <4.96-17ubuntu2 | 4.96-17ubuntu2 |
| debian/exim4 | 4.92-8+deb10u6 4.92-8+deb10u9 4.94.2-7+deb11u2 4.96-15+deb12u4 4.97-5 4.97-8 |
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Reference Links
- https://www.zerodayinitiative.com/advisories/ZDI-23-1469/
- https://bugs.exim.org/show_bug.cgi?id=2999
- https://git.exim.org/exim.git/log/refs/heads/exim-4.96%20security/exim.git/commit/955f1203c15be96fa84b5331fa2a5cb2e556b9a9
- https://www.openwall.com/lists/oss-security/2023/09/29/5
- https://www.openwall.com/lists/oss-security/2023/10/01/4
- https://exim.org/static/doc/security/CVE-2023-zdi.txt
- https://security-tracker.debian.org/tracker/CVE-2023-42115
- https://www.openwall.com/lists/oss-security/2023/10/02/3
- https://ubuntu.com/security/notices/USN-6411-1
- https://www.cve.org/CVERecord?id=CVE-2023-42115
- https://nvd.nist.gov/vuln/detail/CVE-2023-42115
- https://launchpad.net/bugs/cve/CVE-2023-42115
- https://ubuntu.com/security/CVE-2023-42115
- https://www.bleepingcomputer.com/news/security/critical-exim-bug-bypasses-security-filters-on-15-million-mail-servers/
Frequently Asked Questions
What is CVE-2023-42115?
CVE-2023-42115 is an (0Day) Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability.
How does CVE-2023-42115 affect Exim?
CVE-2023-42115 allows remote attackers to execute arbitrary code on affected installations of Exim.
Is authentication required to exploit CVE-2023-42115?
No, authentication is not required to exploit CVE-2023-42115.
What is the severity of CVE-2023-42115?
CVE-2023-42115 has a severity value of 9.8, which is critical.
How can I fix CVE-2023-42115 on Ubuntu?
To fix CVE-2023-42115 on Ubuntu, update the Exim4 package to version 4.93-13ubuntu1.8, 4.95-4ubuntu2.3, 4.96-14ubuntu1.2, or 4.96.1 depending on the specific Ubuntu release.
- agent/type
- agent/first-publish-date
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-23-1469
- alias/ZDI-CAN-17434
- alias/CVE-2023-42115
- agent/software-canonical-lookup
- agent/title
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/usn-cve
- source/Ubuntu
- agent/references
- agent/weakness
- agent/description
- agent/author
- agent/severity
- agent/event
- agent/tags
- collector/nvd-api
- source/NVD
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- collector/bleeping-computer
- source/BleepingComputer
- alias/CVE-2024-39929
- alias/CVE-2019-10149
- vendor/exim
- canonical/exim exim
- package-manager/debian
- package-manager/ubuntu