Code Affecting glibc package, versions <2.21-1


Severity

Recommended
low

Based on Debian security rating

    Threat Intelligence

    EPSS
    2.09% (90th percentile)

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  • Snyk ID SNYK-DEBIAN11-GLIBC-515032
  • published 27 Mar 2015
  • disclosed 27 Mar 2015

How to fix?

Upgrade Debian:11 glibc to version 2.21-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

DB_LOOKUP in nss_files/files-XXX.c in the Name Service Switch (NSS) in GNU C Library (aka glibc or libc6) 2.21 and earlier does not properly check if a file is open, which allows remote attackers to cause a denial of service (infinite loop) by performing a look-up on a database while iterating over it, which triggers the file pointer to be reset.

CVSS Scores

version 3.1
Expand this section

NVD

5.3 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    Low
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Red Hat

4.3 medium