Denial of service in Apache Subversion



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-11803
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Subversion
Server applications / Frameworks for developing and running applications

Vendor Apache Foundation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU17221

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-2018-11803

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input when processing recursive directory listing operations. A remote authenticated attacker can omit the root path, trigger the mod_dav_svn to deference an uninitialized pointer variable and, as a result, crash the HTTPD worker process handling the request.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Subversion: 1.10.0 - 1.10.3

CPE2.3 External links

https://subversion.apache.org/security/CVE-2018-11803-advisory.txt


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.



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