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CVE search · CVE-2026-25506

CVE-2026-25506

high 7.8

MUNGE is an authentication service for creating and validating user credentials. From 0.5 to 0.5.17, local attacker can exploit a buffer overflow vulnerability in munged (the MUNGE authentication daemon) to leak cryptographic key material from process memory. With the leaked key material, the attacker could forge arbitrary MUNGE credentials to impersonate any user (including root) to services that rely on MUNGE for authentication. The vulnerability allows a buffer overflow by sending a crafted message with an oversized address length field, corrupting munged's internal state and enabling extraction of the MAC subkey used for credential verification. This vulnerability is fixed in 0.5.18.

Open in the NVD CVE.org JSON

Details

Status
Modified
Published
Last changed
Source
security-advisories@github.com
Weakness
CWE-787, CWE-120

Severity

VersionScoreVectorSource
CVSS 3.1 high 7.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L security-advisories@github.comSecondary
CVSS 3.1 high 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H nvd@nist.govPrimary
CVSS 3.1 high 7.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L 0b0ca135-0b70-47e7-9f44-1890c2a1c46cSecondary

Affected products

Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.

References