VULNERABILITY INTELLIGENCE

CVE-2015-4334

CVSS score5 MEDIUM
EPSS probability3.33%
CISA KEVNot currently listed
Published2015-12-07
Last modified2026-06-17
CVSS vectorAV:N/AC:L/Au:N/C:P/I:N/A:N

Description

The default configuration of SGOS in Blue Coat ProxySG before 6.2.16.5, 6.5 before 6.5.7.1, and 6.6 before 6.6.2.1 forwards authentication challenges from upstream origin content servers (OCS) when used in an explicit proxy deployment, which makes it easier for remote attackers to obtain sensitive information via a 407 (aka Proxy Authentication Required) HTTP status code, as demonstrated when using NTLM authentication.

Weakness classification

  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Primary references