Integer Overflow or Wraparound Affecting squid:4/libecap package, versions <0:1.0.1-2.module_el8.6.0+2741+01592ae8


Severity

Recommended
high

Based on AlmaLinux security rating

    Threat Intelligence

    EPSS
    13.8% (96th percentile)

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  • Snyk ID SNYK-ALMALINUX8-SQUID-5622484
  • published 28 May 2023
  • disclosed 6 May 2020

How to fix?

Upgrade AlmaLinux:8 squid:4/libecap to version 0:1.0.1-2.module_el8.6.0+2741+01592ae8 or higher.
This issue was patched in ALSA-2020:2041.

NVD Description

Note: Versions mentioned in the description apply only to the upstream squid:4/libecap package and not the squid:4/libecap package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

An issue was discovered in Squid before 5.0.2. A remote attacker can replay a sniffed Digest Authentication nonce to gain access to resources that are otherwise forbidden. This occurs because the attacker can overflow the nonce reference counter (a short integer). Remote code execution may occur if the pooled token credentials are freed (instead of replayed as valid credentials).

References

CVSS Scores

version 3.1
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NVD

9.8 critical
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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SUSE

8.8 high
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Red Hat

8.1 high