VulnerabilityModified

CVE-2023-42114

Exim NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability.

MEDIUM 5.3EPSS 28.1%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 28.1%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

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 3.1: 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS: 28.08% probability · 98th percentile
CISA KEV: Not listed
Weakness: CWE-125
Affected: exim/exim
Source: zdi-disclosures@trendmicro.com

References

https://www.zerodayinitiative.com/advisories/ZDI-23-1468/Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00002.html
https://www.zerodayinitiative.com/advisories/ZDI-23-1468/Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.