Resource exhaustion in Rubyzip - CVE-2019-16892
Published: February 10, 2020 / Updated: February 10, 2020
Vulnerability identifier: #VU25104
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-16892
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Rubyzip
Affected software:
Rubyzip
Rubyzip
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the data about the uncompressed size can be spoofed. A remote attacker can send a specially crafted ZIP file, bypass application checks on ZIP entry sizes, trigger resource exhaustion and perform a denial of service (DoS) attack.
How to mitigate CVE-2019-16892
Install updates from vendor's website.
Sources
- https://github.com/rubyzip/rubyzip/pull/403
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J45KSFPP6DFVWLC7Z73L7SX735CKZYO6/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MWWPORMSBHZTMP4PGF4DQD22TTKBQMMC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X255K6ZBAQC462PQN2ND5HOTTQEJ2G2X/