SB2022121201 - Ubuntu update for squid3
Published: December 12, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 vulnerabilities.
1) Denial of service (CVE-ID: CVE-2016-2569)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
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)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
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)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
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)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
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)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/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 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)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
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.
7) NULL pointer derefenrece (CVE-ID: CVE-2018-1000027)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/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 incorrect pointer handling when processing ESI responses or downloading intermediate CA certificates. A remote attacker can supply a specially crafted response to the vulnerable server and trigger application crash.
Remediation
Install update from vendor's website.