NULL Pointer Dereference Affecting libstb package, versions *


Severity

Recommended
low

Based on Debian security rating

    Threat Intelligence

    EPSS
    0.08% (36th percentile)

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  • Snyk ID SNYK-DEBIAN12-LIBSTB-6023891
  • published 22 Oct 2023
  • disclosed 21 Oct 2023

How to fix?

There is no fixed version for Debian:12 libstb.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libstb package and not the libstb package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

stb_image is a single file MIT licensed library for processing images.

If stbi__load_gif_main in stbi_load_gif_from_memory fails it returns a null pointer and may keep the z variable uninitialized. In case the caller also sets the flip vertically flag, it continues and calls stbi__vertical_flip_slices with the null pointer result value and the uninitialized z value. This may result in a program crash.

CVSS Scores

version 3.1
Expand this section

NVD

7.5 high
  • 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)
    High