Vulnerability Details : CVE-2022-31630
In PHP versions prior to 7.4.33, 8.0.25 and 8.1.12, when using imageloadfont() function in gd extension, it is possible to supply a specially crafted font file, such as if the loaded font is used with imagechar() function, the read outside allocated buffer will be used. This can lead to crashes or disclosure of confidential information.
Vulnerability category: Overflow
Products affected by CVE-2022-31630
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
Threat overview for CVE-2022-31630
Top countries where our scanners detected CVE-2022-31630
Top open port discovered on systems with this issue
80
IPs affected by CVE-2022-31630 269,607
Threat actors abusing to this issue?
Yes
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affected by CVE-2022-31630!
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attack surface intelligence
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Exploit prediction scoring system (EPSS) score for CVE-2022-31630
0.09%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 41 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-31630
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.1
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H |
1.8
|
5.2
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L |
3.9
|
2.5
|
PHP Group |
CWE ids for CVE-2022-31630
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
-
The product does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow.Assigned by: security@php.net (Secondary)
-
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by: security@php.net (Secondary)
References for CVE-2022-31630
-
https://bugs.php.net/bug.php?id=81739
PHP :: Sec Bug #81739 :: OOB read due to insufficient input validation in imageloadfont()Exploit;Issue Tracking;Patch;Vendor Advisory
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