Heap-based buffer overflow in libotr - CVE-2012-3461

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Main Vulnerability Database Vulnerabilities #VU43692

Heap-based buffer overflow in libotr - CVE-2012-3461

Published: August 20, 2012 / Updated: August 11, 2020


Vulnerability identifier: #VU43692
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2012-3461
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: otr.cypherpunks.ca
Affected software:
libotr

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in The (1) otrl_base64_otr_decode function in src/b64.c; (2) otrl_proto_data_read_flags and (3) otrl_proto_accept_data functions in src/proto.c; and (4) decode function in toolkit/parse.c in libotr before 3.2.1 allocates a zero-length buffer when decoding a base64 string, which. A remote attacker can use a message with the value to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


How to mitigate CVE-2012-3461

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Sources