DEBIAN-CVE-2017-7890

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2017-7890
Published: 02 Aug 2017, 19:29
Last modified:28 Apr 2026, 20:17

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
3.0 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Aug 2017, 19:29
Published
Vulnerability first disclosed
28 Apr 2026, 20:17
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.0•MEDIUM•Score: 6.5CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected Systems

  • debian•libgd2

    < 2.2.5-1 | < 2.2.5-1 | < 2.2.5-1 | < 2.2.5-1

References (1)