#VU19589 Reachable Assertion in Subversion - CVE-2018-11782

Vulnerability identifier: #VU19589

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-11782

CWE-ID: CWE-617

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Subversion
Server applications / Frameworks for developing and running applications

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion when handling svnserve 'get-deleted-rev' requests. A remote authenticated attacker with read-only permissions can make the server to reply with incorrect revision number that will lead to svnserve crash.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Subversion: 1.9.0 beta1 - 1.9.11, 1.10.0 rc1 - 1.12.1

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External links
https://subversion.apache.org/security/CVE-2018-11782-advisory.txt

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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