SB2015050501 - Ubuntu update for OpenSSL
Published: May 5, 2015
Security Bulletin ID
SB2015050501
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Race condition (CVE-ID: CVE-2010-5298)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/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 or modify encrypted connection.
The vulnerability exists due to a race condition in the ssl3_read_bytes() function in OpenSSL. A remote attacker can inject data across sessions or cause a denial of service
Successful exploitation of the vulnerability requires that SSL_MODE_RELEASE_BUFFERS is enabled.
2) NULL pointer dereference (CVE-ID: CVE-2014-0198)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/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 in the do_ssl3_write() function in OpenSSL. A remote attacker can send a specially crafted request to vulnerable application and trigger denial of service attack.
Successful exploitation of the vulnerability requires that SSL_MODE_RELEASE_BUFFERS is enabled.
Remediation
Install update from vendor's website.