Buffer overflow - CVE-2019-12802
Published: June 13, 2019 / Updated: August 4, 2020
Vulnerability identifier: #VU33388
CSH Severity: Low
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-12802
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local non-authenticated attacker to execute arbitrary code.
In radare2 through 3.5.1, the rcc_context function of libr/egg/egg_lang.c mishandles changing context. This allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact (invalid memory access in r_egg_lang_parsechar; invalid free in rcc_pusharg).
Affected software
radare2 (Alpine package)
cutter-re
radare2
Fedora
cutter-re
radare2
Fedora
How to mitigate CVE-2019-12802
Install update from vendor's website.
radare2 (Alpine package) - update to 3.9.0-r0
cutter-re - addressed in versions 1.8.0-4.fc30, 1.8.3-1.fc30
radare2 - addressed in versions 3.6.0-1.el7, 3.6.0-1.fc29, 3.6.0-1.fc30
cutter-re - addressed in versions 1.8.0-4.fc30, 1.8.3-1.fc30
radare2 - addressed in versions 3.6.0-1.el7, 3.6.0-1.fc29, 3.6.0-1.fc30
External References
- https://github.com/radare/radare2/issues/14296
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IEXZWAMVKGZKHALV4IVWQS2ORJKRH57U/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SX4TLTE75VYUGSPYEKMYFPUZMRDIR7O2/