Libpng: Security Vulnerabilities
A heap overflow flaw was found in libpngs' pngimage.c program. This flaw allows an attacker with local network access to pass a specially crafted PNG file to the pngimage utility, causing an application to crash, leading to a denial of service.
CVSS Score
5.5
EPSS Score
0.0
Published
2022-08-24
A global buffer overflow was discovered in pngcheck function in pngcheck-2.4.0(5 patches applied) via a crafted png file.
CVSS Score
7.8
EPSS Score
0.001
Published
2022-08-23
A flaw was found in the check_chunk_name() function of pngcheck-2.4.0. An attacker able to pass a malicious file to be processed by pngcheck could cause a temporary denial of service, posing a low risk to application availability.
CVSS Score
3.3
EPSS Score
0.002
Published
2020-12-08
libpng before 1.6.32 does not properly check the length of chunks against the user limit.
CVSS Score
9.8
EPSS Score
0.005
Published
2019-07-10
An issue has been found in third-party PNM decoding associated with libpng 1.6.35. It is a stack-based buffer overflow in the function get_token in pnm2png.c in pnm2png.
CVSS Score
8.8
EPSS Score
0.026
Published
2019-07-10
png_image_free in png.c in libpng 1.6.x before 1.6.37 has a use-after-free because png_image_free_function is called under png_safe_execute.
CVSS Score
5.3
EPSS Score
0.006
Published
2019-02-04
png_create_info_struct in png.c in libpng 1.6.36 has a memory leak, as demonstrated by pngcp. NOTE: a third party has stated "I don't think it is libpng's job to free this buffer.
CVSS Score
6.5
EPSS Score
0.004
Published
2019-01-11
An issue has been found in libpng 1.6.34. It is a SEGV in the function png_free_data in png.c, related to the recommended error handling for png_read_image.
CVSS Score
6.5
EPSS Score
0.003
Published
2018-07-13
In libpng 1.6.34, a wrong calculation of row_factor in the png_check_chunk_length function (pngrutil.c) may trigger an integer overflow and resultant divide-by-zero while processing a crafted PNG file, leading to a denial of service.
CVSS Score
6.5
EPSS Score
0.022
Published
2018-07-09
The png_set_text_2 function in libpng 0.71 before 1.0.67, 1.2.x before 1.2.57, 1.4.x before 1.4.20, 1.5.x before 1.5.28, and 1.6.x before 1.6.27 allows context-dependent attackers to cause a NULL pointer dereference vectors involving loading a text chunk into a png structure, removing the text, and then adding another text chunk to the structure.
CVSS Score
7.5
EPSS Score
0.019
Published
2017-01-30
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