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Ubuntu: (Multiple Advisories) (CVE-2017-7890): GD vulnerability

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Ubuntu: (Multiple Advisories) (CVE-2017-7890): GD vulnerability

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
08/02/2017
Created
07/25/2018
Added
08/15/2017
Modified
11/27/2024

Description

The GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c in the GD Graphics Library (aka libgd), as used in PHP before 5.6.31 and 7.x before 7.1.7, does not zero colorMap arrays before use. A specially crafted GIF image could use the uninitialized tables to read ~700 bytes from the top of the stack, potentially disclosing sensitive information.

Solution(s)

  • ubuntu-upgrade-libgd-tools

References

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