| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE ID | CVE-2016-4053 |
| CWE ID | CWE-119 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Squid Server applications / IDS/IPS systems, Firewalls and proxy servers |
| Vendor | Squid-cache.org |
This security advisory describes one low risk vulnerability.
Risk: Low
CVSSv3: 3.2 [CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2016-4053
CWE-ID:
CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
Squid 3.x before 3.5.17 and 4.x before 4.0.9 allow remote attackers to obtain sensitive stack layout information via crafted Edge Side Includes (ESI) responses, related to incorrect use of assert and compiler optimization.
MitigationInstall update from vendor's website.
Vulnerable software versionsSquid: 2.3.devel2, 2.3.devel3, 2.3.stable1, 2.3.stable2, 2.3.stable3, 2.3.stable4, 2.3.stable5, 3.0, 3.0.stable1, 3.0.stable2, 3.0.stable3, 3.0.stable4, 3.0.stable5, 3.0.stable6, 3.0.stable7, 3.0.stable8, 3.0.stable9, 3.0.stable10, 3.0.stable11, 3.0.stable12, 3.0.stable13, 3.0.stable14, 3.0.stable15, 3.0.stable16, 3.0.stable17, 3.0.stable18, 3.0.stable19, 3.0.stable20, 3.0.stable21, 3.0.stable22, 3.0.stable23, 3.0.stable24, 3.0.stable25, 3.0.stable26, 3.1, 3.1.0.1, 3.1.0.2, 3.1.0.3, 3.1.0.4, 3.1.0.5, 3.1.0.6, 3.1.0.7, 3.1.0.8, 3.1.0.9, 3.1.0.10, 3.1.0.11, 3.1.0.12, 3.1.0.13, 3.1.0.14, 3.1.0.15, 3.1.0.16, 3.1.0.17, 3.1.0.18, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.5.1, 3.1.6, 3.1.7, 3.1.8, 3.1.9, 3.1.10, 3.1.11, 3.1.12, 3.1.12.1, 3.1.12.2, 3.1.12.3, 3.1.13, 3.1.14, 3.1.15, 3.1.16, 3.1.17, 3.1.18, 3.1.19, 3.1.20, 3.1.21, 3.1.22, 3.1.23, 3.2, 3.2.0.1, 3.2.0.2, 3.2.0.3, 3.2.0.4, 3.2.0.5, 3.2.0.6, 3.2.0.7, 3.2.0.8, 3.2.0.9, 3.2.0.10, 3.2.0.11, 3.2.0.12, 3.2.0.13, 3.2.0.14, 3.2.0.15, 3.2.0.16, 3.2.0.17, 3.2.0.18, 3.2.0.19, 3.2.1, 3.2.2, 3.2.3, 3.2.4, 3.2.5, 3.2.6, 3.2.7, 3.2.8, 3.2.9, 3.2.10, 3.2.11, 3.2.12, 3.2.13, 3.2.14, 3.3, 3.3.0, 3.3.0.1, 3.3.0.2, 3.3.0.3, 3.3.1, 3.3.2, 3.3.3, 3.3.4, 3.3.5, 3.3.6, 3.3.7, 3.3.8, 3.3.9, 3.3.10, 3.3.11, 3.3.12, 3.3.13, 3.3.14, 3.4, 3.4.0.1, 3.4.0.2, 3.4.0.3, 3.4.1, 3.4.2, 3.4.3, 3.4.4, 3.4.4.1, 3.4.4.2, 3.4.5, 3.4.6, 3.4.7, 3.4.8, 3.4.9, 3.4.10, 3.4.11, 3.4.12, 3.4.13, 3.4.14, 3.5, 3.5.0.1, 3.5.0.2, 3.5.0.3, 3.5.0.4, 3.5.1, 3.5.2, 3.5.3, 3.5.4, 3.5.5, 3.5.6, 3.5.7, 3.5.8, 3.5.9, 3.5.10, 3.5.11, 3.5.12, 3.5.13, 3.5.14, 3.5.15, 3.5.16
CPEhttp://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html
http://www.debian.org/security/2016/dsa-3625
http://www.openwall.com/lists/oss-security/2016/04/20/6
http://www.openwall.com/lists/oss-security/2016/04/20/9
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.securityfocus.com/bid/86788
http://www.securityfocus.com/bid/91787
http://www.securitytracker.com/id/1035647
http://www.squid-cache.org/Advisories/SQUID-2016_6.txt
http://www.ubuntu.com/usn/USN-2995-1
https://access.redhat.com/errata/RHSA-2016:1138
https://access.redhat.com/errata/RHSA-2016:1139
https://access.redhat.com/errata/RHSA-2016:1140
https://security.gentoo.org/glsa/201607-01
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.