SB2003032401 - Klima-Pokorny-Rosa attack on RSA in SSL/TLS in OpenSSL
Published: March 24, 2003 Updated: August 2, 2016
Security Bulletin ID
SB2003032401
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Klima-Pokorny-Rosa attack on RSA in SSL/TLS (CVE-ID: CVE-2003-0131)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to perform an unauthorized RSA private key operation.
The vulnerability exists in OpenSSL. A remote unauthenticated attacker can perform an unauthorized RSA private key operation via a modified Bleichenbacher attack that uses a large number of SSL or TLS connections using PKCS #1 v1.5 padding and cause OpenSSL to leak information regarding the relationship between ciphertext and the associated plaintext, aka the "Klima-Pokorny-Rosa attack."
Successful exploitation of this vulnerability may result in disclosure of system information.
Remediation
Install update from vendor's website.