#VU14570 Security restrictions bypass in Apache Traffic Server - CVE-2018-8040

Vulnerability identifier: #VU14570

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-8040

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Traffic Server
Server applications / Web servers

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The vulnerability exists due to an error when pages are rendered using the ESI plugin. A remote attacker can bypass security restrictions and gain header variable access in the ESI plugin.

Mitigation
Update to version 6.2.3, 7.1.4.

Vulnerable software versions

Apache Traffic Server: 6.0.0, 6.1.0 - 6.1.1, 6.2.0 - 6.2.2, 7.0.0, 7.1.0 - 7.1.3

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External links
https://lists.apache.org/thread.html/cc7aa2ce1c6f4fe0c6bfef517763cdaad30ec7bcb0115b73f73f3c01@%3Cusers.trafficserver.apache.org%3E

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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