SB2009120904 - NULL pointer dereference in openssl (Alpine package)
Published: December 9, 2009
Security Bulletin ID
SB2009120904
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2009-1387)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the dtls1_retrieve_buffered_fragment function in ssl/d1_both.c in OpenSSL. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack via an out-of-sequence DTLS handshake message, related to a "fragment bug.".
Remediation
Install update from vendor's website.