PT-2012-6102 · Paypal · Paypal Payments Standard Php Library

Published 2012-11-04 · Updated 2017-08-29 · CVE-2012-5790

Positive Technologies (AI Summary)

CVSS v2.0

5.8

Medium

Base vector

AV:N/AC:M/Au:N/C:P/I:P/A:N

Name of the Vulnerable Software and Affected Versions PayPal Payments Standard PHP Library version 20120427

Description The issue arises from the library's failure to verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate. This allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate, due to a misinterpretation of a certain TRUE value.

Recommendations For PayPal Payments Standard PHP Library version 20120427, update the library to properly verify the server hostname against the X.509 certificate to prevent man-in-the-middle attacks.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2012-5790

Affected Products

Paypal Payments Standard Php Library

References · 3

• 🔥 http://cs.utexas.edu/~shmat/shmat_ccs12.pdf · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2012-5790 · Security Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/79981 · Note