SB2018020610 - Ubuntu update for Squid
Published: February 6, 2018
Security Bulletin ID
SB2018020610
Severity
Low
Patch available
YES
Number of vulnerabilities
6
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 secuirty vulnerabilities.
1) Denial of service (CVE-ID: CVE-2016-2569)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to improper appending of data to String objects. A remote attacker can use a long string, as demonstrated by a crafted HTTP Vary header, trigger assertion failure and daemon exit and cause the service to crash.
2) Memory corruption (CVE-ID: CVE-2016-2570)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in the Edge Side Includes (ESI) parser due to improper checking of buffer limits during XML parsing. A remote attacker can use a specially crafted XML document, related to esi/CustomParser.cc and esi/CustomParser.h, as demonstrated by a crafted HTTP Vary header, trigger assertion failure and daemon exit and cause the service to crash.
3) Denial of service (CVE-ID: CVE-2016-2571)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in http.cc due to proceeding with the storage of certain data after a response-parsing failure. A remote attacker can use a specially crafted response, trigger assertion failure and daemon exit and cause the service to crash.
4) Memory corruption (CVE-ID: CVE-2016-3948)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to improper bounds checking. A remote attacker can use a specially crafted HTTP response, related to Vary headers, trigger memory corruption and cause the service to crash.
5) NULL pointer derefenrece (CVE-ID: CVE-2018-1000024)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.The vulnerability exists due to incorrect pointer handling when processing ESI responses. A remote attacker can supply a specially crafted response to the vulnerable server and trigger application crash.
6) Denial of service (CVE-ID: CVE-2018-1000027)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to unspecified error. A remote attacker can cause denial of service issue in HTTP Message processing.
Remediation
Install update from vendor's website.