Improper Verification of Cryptographic Signature in libzypp - CVE-2018-7685
Published: August 31, 2018 / Updated: August 8, 2020
Vulnerability identifier: #VU36755
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-7685
CWE-ID: CWE-347
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local authenticated user to execute arbitrary code.
The decoupled download and installation steps in libzypp before 17.5.0 could lead to a corrupted RPM being left in the cache, where a later call would not display the corrupted RPM warning and allow installation, a problem caused by malicious warnings only displayed during download.
Affected software
libzypp
zypper
Fedora
Opensuse
zypper
Fedora
Opensuse
How to mitigate CVE-2018-7685
Install update from vendor's website.
libzypp - update to 17.5.0
zypper - update to 1.13.45-1.fc27
libzypp - update to 16.17.20-1.fc27
zypper - update to 1.13.45-1.fc27
libzypp - update to 16.17.20-1.fc27