Reachable Assertion in subversion (Alpine package)

1) Reachable Assertion

EUVDB-ID: #VU19589

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-11782

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

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 update from vendor's website.

Vulnerable software versions

subversion (Alpine package): 1.9.2-r0 - 1.9.7-r0

CPE2.3

• cpe:2.3:o:alpine:subversion_alpine_package:1.9.7-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:subversion_alpine_package:1.9.5-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:subversion_alpine_package:1.9.5-r1:*:*:*:*:alpine_linux:*:

External links

http://git.alpinelinux.org/aports/commit/?id=eceae12fdc59478d8577e129f7c7ff024e0fac0b
http://git.alpinelinux.org/aports/commit/?id=00283c5e934a2d9ca643bd5520a1c15855a6e85d
http://git.alpinelinux.org/aports/commit/?id=815a43cf9c8f71f24f63ffdcc6c77c61ff988f59
http://git.alpinelinux.org/aports/commit/?id=92bbb9e70c73b190532ce28b44e074f8f0b1745b
http://git.alpinelinux.org/aports/commit/?id=ca2172ac44a492441b25565d8038cc7ec6c2a601

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.