Use After Free Affecting nginx package, versions [1.25.0,1.26.1)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.05% (16th percentile)

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  • Snyk ID SNYK-UNMANAGED-NGINX-7172732
  • published 31 May 2024
  • disclosed 29 May 2024
  • credit Unknown

How to fix?

Upgrade nginx to version 1.26.1 or higher.

Overview

Affected versions of this package are vulnerable to Use After Free due to the handling of undisclosed QUIC packets in specific network configurations. An attacker can cause memory leakage by sending specially crafted QUIC packets when the HTTP/3 QUIC module is enabled and the network supports an MTU of 4096 or greater without fragmentation.

CVSS Scores

version 3.1
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Snyk

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

Red Hat

5.3 medium