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.
Published 2017-08-02 19:29:01
Updated 2018-05-04 01:29:10
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Information leak

Threat overview for CVE-2017-7890

Top countries where our scanners detected CVE-2017-7890
Top open port discovered on systems with this issue 80
IPs affected by CVE-2017-7890 358,488
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2017-7890!
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Exploit prediction scoring system (EPSS) score for CVE-2017-7890

29.79%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 96 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-7890

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
MEDIUM AV:N/AC:M/Au:N/C:P/I:N/A:N
8.6
2.9
NIST
6.5
MEDIUM CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
2.8
3.6
NIST

CWE ids for CVE-2017-7890

References for CVE-2017-7890

Products affected by CVE-2017-7890

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