Input validation error in radare2 - CVE-2020-17487
Published: August 11, 2020 / Updated: August 21, 2023
Vulnerability identifier: #VU45877
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-17487
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
radare2 4.5.0 misparses signature information in PE files, causing a segmentation fault in r_x509_parse_algorithmidentifier in libr/util/x509.c. This is due to a malformed object identifier in IMAGE_DIRECTORY_ENTRY_SECURITY.
Affected software
radare2
Fedora
radare2
Fedora
radare2
How to mitigate CVE-2020-17487
Install update from vendor's website.
radare2 - update to 4.5.1
radare2 - addressed in versions 5.1.1-1.fc32, 5.1.1-1.fc33, 5.2.1-1.el7, 5.2.1-2.el8
radare2 - addressed in versions 5.1.1-1.fc32, 5.1.1-1.fc33, 5.2.1-1.el7, 5.2.1-2.el8