SB2013101201 - Backdoor in D-Link routers
Published: October 12, 2013 Updated: March 24, 2017
Security Bulletin ID
SB2013101201
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Security bypass (CVE-ID: CVE-2013-6026)
CWE-ID: CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to an error in the alpha_auth_check() function. By setting the user agent string to xmlset_roodkcableoj28840ybtide, an attacker can send an HTTP request to bypass authentication and obtain administrative access to the device.
Successful exploitation of the vulnerability results in full access to the vulnerable system.
Note: the vulnerability was being actively exploited.
Remediation
Install update from vendor's website.