OpenSUSE Linux update for squid
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 12 |
| CVE-ID | CVE-2019-12523 CVE-2019-12525 CVE-2019-12526 CVE-2019-12527 CVE-2019-12529 CVE-2019-12854 CVE-2019-13345 CVE-2019-18676 CVE-2019-18677 CVE-2019-18678 CVE-2019-18679 CVE-2019-3688 |
| CWE-ID | CWE-20 CWE-119 CWE-122 CWE-125 CWE-79 CWE-352 CWE-444 CWE-200 CWE-276 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #7 is available. |
| Vulnerable software |
Opensuse Operating systems & Components / Operating system |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 12 vulnerabilities.
1) Input validation error
EUVDB-ID: #VU22908
Risk: Medium
CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2019-12523
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to insufficient validation of user-supplied input when processing URIs. A remote authenticated attacker can add certain characters to the URI, bypass implemented security restrictions and access restricted websites.
Update the affected packages.
Opensuse: 15.1
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Buffer overflow
EUVDB-ID: #VU20445
Risk: Medium
CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2019-12525
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input passed via the Proxy-Authorization header when Squid is configured to use HTTP Digest authentication . A remote attacker can send specially crafted HTTP request to the proxy server and perform denial of service attack.
Update the affected packages.
Opensuse: 15.1
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Heap-based buffer overflow
EUVDB-ID: #VU22585
Risk: High
CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2019-12526
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing URN requests. A remote attacker can send specially crafted request to the Squid client, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate the affected packages.
Opensuse: 15.1
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Heap-based buffer overflow
EUVDB-ID: #VU19169
Risk: High
CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2019-12527
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when checking Basic Authentication with HttpHeader::getAuth. A remote attacker can send an overly long authentication string, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate the affected packages.
Opensuse: 15.1
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
5) Out-of-bounds read
EUVDB-ID: #VU20460
Risk: Low
CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2019-12529
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition when parsing username in the Proxy-Authorization header during HTTP Basic authentication. A remote attacker can send specially crafted request to the Squid proxy server and retrieve parts of memory contents, if the Squid maintainer had configured the display of usernames on error pages.
MitigationUpdate the affected packages.
Opensuse: 15.1
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
6) Out-of-bounds read
EUVDB-ID: #VU20461
Risk: Medium
CVSSv4.0: 6.6 [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]
CVE-ID: CVE-2019-12854
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when terminating strings in cachemgr.cgi. A remote attacker can a specially crafted request to the affected proxy server, trigger out-of-bounds read error and crash the CGI process, denying access to all users on systems with memory access protections.
Update the affected packages.
Opensuse: 15.1
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
7) Cross-site scripting
EUVDB-ID: #VU19140
Risk: Medium
CVSSv4.0: 2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Green]
CVE-ID: CVE-2019-13345
CWE-ID:
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data passed via the the "user_name" and "auth" parameters to the cachemgr.cgi web module. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Example:
http://[host]/cgi-bin/cachemgr.cgi?host=localhost&port=3128&user_name=admin&operation=authenticate&auth=bG9jYWxob3N0fDE1NTg5NTYzNzJ8YWRtIj48c2NyaXB0PmFsZXJ0KCdYU1MnKTwvc2NyaXB0PmlufGRzZGFkYWE=
Mitigation
Update the affected packages.
Opensuse: 15.1
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
8) Input validation error
EUVDB-ID: #VU22909
Risk: Medium
CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2019-18676
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to insufficient validation of user-supplied input when processing URIs. A remote attacker can create a specially crafted link, trick the victim into visiting it, trigger buffer overflow and crash the Squid process.
Update the affected packages.
Opensuse: 15.1
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
9) Cross-site request forgery
EUVDB-ID: #VU22910
Risk: Medium
CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2019-18677
CWE-ID:
CWE-352 - Cross-Site Request Forgery (CSRF)
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform cross-site request forgery attacks.
The vulnerability exists due to insufficient validation of the HTTP request origin, when Squid is configured with the append_domain option. A remote attacker can trick the victim to visit a specially crafted web page and redirect victim's traffic to a third-party domain.
Update the affected packages.
Opensuse: 15.1
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
10) Inconsistent interpretation of HTTP requests
EUVDB-ID: #VU22587
Risk: Medium
CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2019-18678
CWE-ID:
CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform HTTP request smuggling attack.
The vulnerability exists due to insufficient validation of HTTP request headers in Squid. A remote attacker can initiate a specially crafted HTTP request that will cause the software to split HTTP request and display to the end user content, controlled by the attacker at arbitrary URL.
MitigationUpdate the affected packages.
Opensuse: 15.1
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
11) Information disclosure
EUVDB-ID: #VU22589
Risk: Low
CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2019-18679
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to incorrect data management when processing HTTP Digest Authentication. Nonce tokens contain the raw byte value of a pointer which sits within heap memory allocation. This allows a remote attacker to gain knowledge of memory allocations and bypass ASLR protection and help in exploitation of other vulnerabilities.
MitigationUpdate the affected packages.
Opensuse: 15.1
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
12) Incorrect default permissions
EUVDB-ID: #VU22911
Risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2019-3688
CWE-ID:
CWE-276 - Incorrect Default Permissions
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to insecure default permissions (e.g. squid:root, 0750) for the " /usr/sbin/pinger" binary that is shipped with squid 4.8-5.8.1 and earlier packages for SUSE Linux Enterprise Server 15 and squid version 3.5.21-26.17.1 and earlier for SUSE Linux Enterprise Server 12. A local user can compromise the squid account and elevate privileges on the system by modding the affected binary.
Update the affected packages.
Opensuse: 15.1
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
