Use After Free Affecting curl package, versions <0:7.61.1-30.el8


Severity

Recommended
low

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.12% (48th percentile)

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  • Snyk ID SNYK-ORACLE8-CURL-5600339
  • published 16 May 2023
  • disclosed 9 Feb 2023

How to fix?

Upgrade Oracle:8 curl to version 0:7.61.1-30.el8 or higher.
This issue was patched in ELSA-2023-2963.

NVD Description

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

A use after free vulnerability exists in curl <7.87.0. Curl can be asked to tunnel virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path.

CVSS Scores

version 3.1
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NVD

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

5.6 medium
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Red Hat

5.9 medium