Reliance on Cookies without Validation and Integrity Checking Affecting php7-zlib package, versions <7.4.33-150200.3.46.2


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating

    Threat Intelligence

    EPSS
    0.45% (76th percentile)

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  • Snyk ID SNYK-SLES153-PHP7ZLIB-3128860
  • published 19 Nov 2022
  • disclosed 18 Nov 2022

How to fix?

Upgrade SLES:15.3 php7-zlib to version 7.4.33-150200.3.46.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php7-zlib package and not the php7-zlib package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

In PHP versions 7.2.x below 7.2.34, 7.3.x below 7.3.23 and 7.4.x below 7.4.11, when PHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like __Host confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. See also CVE-2020-8184 for more information.

CVSS Scores

version 3.1
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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)
    Low
  • Availability (A)
    None
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SUSE

6.8 medium
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Red Hat

5.3 medium