Gnu: Security Vulnerabilities
A flaw was found in glibc. An off-by-one buffer overflow and underflow in getcwd() may lead to memory corruption when the size of the buffer is exactly 1. A local attacker who can control the input buffer and size passed to getcwd() in a setuid program could use this flaw to potentially execute arbitrary code and escalate their privileges on the system.
CVSS Score
7.8
EPSS Score
0.01
Published
2022-08-24
A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.
CVSS Score
6.5
EPSS Score
0.003
Published
2022-08-24
LibreDWG v0.12.4.4608 & commit f2dea29 was discovered to contain a heap use-after-free via bit_copy_chain.
CVSS Score
9.8
EPSS Score
0.003
Published
2022-08-18
A vulnerability found in gnutls. This security flaw happens because of a double free error occurs during verification of pkcs7 signatures in gnutls_pkcs7_verify function.
CVSS Score
7.5
EPSS Score
0.009
Published
2022-08-01
GNU SASL libgsasl server-side read-out-of-bounds with malicious authenticated GSS-API client
CVSS Score
3.8
EPSS Score
0.001
Published
2022-07-19
A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitrary code execution and circumvent secure boot protections. This issue has a high complexity to be exploited as an attacker needs to perform some triage over the heap layout to achieve signifcant results, also the values written into the memory are repeated three times in a row making difficult to produce valid payloads. This flaw affects grub2 versions prior grub-2.12.
CVSS Score
4.5
EPSS Score
0.001
Published
2022-07-06
A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
CVSS Score
4.5
EPSS Score
0.001
Published
2022-07-06
A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
CVSS Score
7.0
EPSS Score
0.001
Published
2022-07-06
LibreDWG v0.12.4.4608 was discovered to contain a heap-use-after-free via the function decode_preR13_section at decode_r11.c.
CVSS Score
7.8
EPSS Score
0.001
Published
2022-06-23
LibreDWG v0.12.4.4608 was discovered to contain a heap buffer overflow via the function bit_calc_CRC at bits.c.
CVSS Score
7.8
EPSS Score
0.002
Published
2022-06-23