Improper Verification of Cryptographic Signature in SuSE libzypp



| Updated: 2020-08-08
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-7685
CWE-ID CWE-347
Exploitation vector Local
Public exploit N/A
Vulnerable software
 libzypp
Operating systems & Components / Operating system package or component

Vendor SUSE

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper Verification of Cryptographic Signature

EUVDB-ID: #VU36755

Risk: Low

CVSSv4.0: 5.9 [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/E:U/U:Clear]

CVE-ID: CVE-2018-7685

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

Exploit availability: No

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libzypp: 17.0.0 - 17.4.0

CPE2.3 External links

https://lists.suse.com/pipermail/sle-security-updates/2018-August/004510.html
https://bugzilla.suse.com/show_bug.cgi?id=1091624
https://www.suse.com/de-de/security/cve/CVE-2018-7685/


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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