vulnwire
6.5med

CVE-2017-7890

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…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
6.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
3.4%
percentile 89%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

3.42% probability of exploitation in the next 30 days, higher than 89% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.06.5CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD2.04.3AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Technology feeds
PHP (RSS, critical only)

References

  • bugs.php.net /patch-display.php?bug=74435&patch=fix-74435-php-7.0&revision=1497970038 · x_refsource_CONFIRM, x_transferred
  • tenable.com /security/tns-2017-12 · x_refsource_CONFIRM, x_transferred
  • debian.org /security/2017/dsa-3938 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • access.redhat.com /errata/RHSA-2018:1296 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • php.net /ChangeLog-5.php · x_refsource_CONFIRM, x_transferred
  • security.netapp.com /advisory/ntap-20180112-0001/ · x_refsource_CONFIRM, x_transferred
  • securityfocus.com /bid/99492 · vdb-entry, x_refsource_BID, x_transferred
  • php.net /ChangeLog-7.php · x_refsource_CONFIRM, x_transferred
  • access.redhat.com /errata/RHSA-2018:0406 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • bugs.php.net /bug.php?id=74435 · x_refsource_CONFIRM, x_transferred

Sources

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