Out-of-bounds read in libtorrent - CVE-2017-9847
Published: June 24, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU38818
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-9847
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in The bdecode function in bdecode.cpp in libtorrent 1.1.3. A remote attacker can perform a denial of service (heap-based buffer over-read and application crash) via a crafted file.
Affected software
libtorrent
Fedora
rb_libtorrent
qbittorrent
Fedora
rb_libtorrent
qbittorrent
How to mitigate CVE-2017-9847
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
rb_libtorrent - addressed in versions 1.1.5-1.fc25, 1.1.5-1.fc26, 1.1.5-1.fc27
qbittorrent - addressed in versions 4.0.1-1.fc25, 4.0.1-1.fc26, 4.0.1-1.fc27
qbittorrent - addressed in versions 4.0.1-1.fc25, 4.0.1-1.fc26, 4.0.1-1.fc27