Cross-site scripting in php5 (Alpine package)

1) Cross-site scripting

EUVDB-ID: #VU15292

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-17082

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to the header Transfer-Encoding: chunked. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

php5 (Alpine package): 5.6.30-r0 - 5.6.40-r0

php5 (Alpine package):

External links

http://git.alpinelinux.org/aports/commit/?id=195c4dea4525cc85ef4ab449d2c739b6b5081b48
http://git.alpinelinux.org/aports/commit/?id=4a7ccf578f5caf82b4c9120ac266ff49f245549a
http://git.alpinelinux.org/aports/commit/?id=7a2897f5fb53f23d6d00a7b63c4a7a2771887bb7
http://git.alpinelinux.org/aports/commit/?id=5a139d90fddef86a140f5dc52f95dd0548de4525
http://git.alpinelinux.org/aports/commit/?id=389d0b359a27f0f187e0666cfd48249bb2a9d2eb
http://git.alpinelinux.org/aports/commit/?id=d42b915a2245405763bb485ededfbdb01393f109

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.