Cross-site scripting in libgcrypt (Alpine package)

1) Cross-site scripting

EUVDB-ID: #VU33524

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-0378

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

Exploit availability: No

Description

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

The vulnerability exists in "the login_form function in views/helpers.php in Phamm before 0.6.7, exploitable" due to insufficient sanitization of user-supplied data passed via the PATH_INFO to main.php. 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

libgcrypt (Alpine package): 1.7.8-r0

CPE2.3

• cpe:2.3:o:alpine:libgcrypt_alpine_package:1.7.8-r0:*:*:*:*:alpine_linux:*:3.2

External links

https://git.alpinelinux.org/aports/commit/?id=696f5be8d1756d7d79380dea33195ba98c85a833
https://git.alpinelinux.org/aports/commit/?id=a7b9d19a1fc41bfd42e93e36100949f79ed0ea50
https://git.alpinelinux.org/aports/commit/?id=3189f66bd0bf5c00883e527600243bc084badd61
https://git.alpinelinux.org/aports/commit/?id=3b612fd1e8496523ee54b325d8e3b6de96bde290

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.