RedHat: RHSA-2020-4743:01 Moderate: squid:4 security, bug fix,
Summary
Squid is a high-performance proxy caching server for web clients,
supporting FTP, Gopher, and HTTP data objects.
The following packages have been upgraded to a later upstream version:
squid (4.11). (BZ#1829467)
Security Fix(es):
* squid: Improper input validation in request allows for proxy manipulation
(CVE-2019-12520)
* squid: Off-by-one error in addStackElement allows for heap buffer
overflow and crash (CVE-2019-12521)
* squid: Improper input validation in URI processor (CVE-2019-12523)
* squid: Improper access restriction in url_regex may lead to security
bypass (CVE-2019-12524)
* squid: Heap overflow issue in URN processing (CVE-2019-12526)
* squid: Information Disclosure issue in FTP Gateway (CVE-2019-12528)
* squid: Out of bounds read in Proxy-Authorization header causes DoS
(CVE-2019-12529)
* squid: Denial of service in cachemgr.cgi (CVE-2019-12854)
* squid: Buffer overflow in URI processor (CVE-2019-18676)
* squid: Cross-Site Request Forgery issue in HTTP Request processing
(CVE-2019-18677)
* squid: HTTP Request Splitting issue in HTTP message processing
(CVE-2019-18678)
* squid: Information Disclosure issue in HTTP Digest Authentication
(CVE-2019-18679)
* squid: Mishandled HTML in the host parameter to cachemgr.cgi results in
insecure behaviour (CVE-2019-18860)
* squid: Improper input validation issues in HTTP Request processing
(CVE-2020-8449)
* squid: Buffer overflow in reverse-proxy configurations (CVE-2020-8450)
* squid: DoS in TLS handshake (CVE-2020-14058)
* squid: Request smuggling and poisoning attack against the HTTP cache
(CVE-2020-15049)
* squid: Improper input validation could result in a DoS (CVE-2020-24606)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat
Enterprise Linux 8.3 Release Notes linked from the References section.
Summary
Solution
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing this update, the squid service will be restarted
automatically.
References
https://access.redhat.com/security/cve/CVE-2019-12520 https://access.redhat.com/security/cve/CVE-2019-12521 https://access.redhat.com/security/cve/CVE-2019-12523 https://access.redhat.com/security/cve/CVE-2019-12524 https://access.redhat.com/security/cve/CVE-2019-12526 https://access.redhat.com/security/cve/CVE-2019-12528 https://access.redhat.com/security/cve/CVE-2019-12529 https://access.redhat.com/security/cve/CVE-2019-12854 https://access.redhat.com/security/cve/CVE-2019-18676 https://access.redhat.com/security/cve/CVE-2019-18677 https://access.redhat.com/security/cve/CVE-2019-18678 https://access.redhat.com/security/cve/CVE-2019-18679 https://access.redhat.com/security/cve/CVE-2019-18860 https://access.redhat.com/security/cve/CVE-2020-8449 https://access.redhat.com/security/cve/CVE-2020-8450 https://access.redhat.com/security/cve/CVE-2020-14058 https://access.redhat.com/security/cve/CVE-2020-15049 https://access.redhat.com/security/cve/CVE-2020-24606 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.3_release_notes/
Package List
Red Hat Enterprise Linux AppStream (v. 8):
Source:
libecap-1.0.1-2.module+el8.1.0+4044+36416a77.src.rpm
squid-4.11-3.module+el8.3.0+7851+7808b5f9.src.rpm
aarch64:
libecap-1.0.1-2.module+el8.1.0+4044+36416a77.aarch64.rpm
libecap-debuginfo-1.0.1-2.module+el8.1.0+4044+36416a77.aarch64.rpm
libecap-debugsource-1.0.1-2.module+el8.1.0+4044+36416a77.aarch64.rpm
libecap-devel-1.0.1-2.module+el8.1.0+4044+36416a77.aarch64.rpm
squid-4.11-3.module+el8.3.0+7851+7808b5f9.aarch64.rpm
squid-debuginfo-4.11-3.module+el8.3.0+7851+7808b5f9.aarch64.rpm
squid-debugsource-4.11-3.module+el8.3.0+7851+7808b5f9.aarch64.rpm
ppc64le:
libecap-1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le.rpm
libecap-debuginfo-1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le.rpm
libecap-debugsource-1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le.rpm
libecap-devel-1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le.rpm
squid-4.11-3.module+el8.3.0+7851+7808b5f9.ppc64le.rpm
squid-debuginfo-4.11-3.module+el8.3.0+7851+7808b5f9.ppc64le.rpm
squid-debugsource-4.11-3.module+el8.3.0+7851+7808b5f9.ppc64le.rpm
s390x:
libecap-1.0.1-2.module+el8.1.0+4044+36416a77.s390x.rpm
libecap-debuginfo-1.0.1-2.module+el8.1.0+4044+36416a77.s390x.rpm
libecap-debugsource-1.0.1-2.module+el8.1.0+4044+36416a77.s390x.rpm
libecap-devel-1.0.1-2.module+el8.1.0+4044+36416a77.s390x.rpm
squid-4.11-3.module+el8.3.0+7851+7808b5f9.s390x.rpm
squid-debuginfo-4.11-3.module+el8.3.0+7851+7808b5f9.s390x.rpm
squid-debugsource-4.11-3.module+el8.3.0+7851+7808b5f9.s390x.rpm
x86_64:
libecap-1.0.1-2.module+el8.1.0+4044+36416a77.x86_64.rpm
libecap-debuginfo-1.0.1-2.module+el8.1.0+4044+36416a77.x86_64.rpm
libecap-debugsource-1.0.1-2.module+el8.1.0+4044+36416a77.x86_64.rpm
libecap-devel-1.0.1-2.module+el8.1.0+4044+36416a77.x86_64.rpm
squid-4.11-3.module+el8.3.0+7851+7808b5f9.x86_64.rpm
squid-debuginfo-4.11-3.module+el8.3.0+7851+7808b5f9.x86_64.rpm
squid-debugsource-4.11-3.module+el8.3.0+7851+7808b5f9.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update for the squid:4 module is now available for Red Hat EnterpriseLinux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64
Bugs Fixed
1730523 - CVE-2019-12854 squid: Denial of service in cachemgr.cgi
1730528 - CVE-2019-12529 squid: Out of bounds read in Proxy-Authorization header causes DoS
1770349 - CVE-2019-18678 squid: HTTP Request Splitting issue in HTTP message processing
1770356 - CVE-2019-12526 squid: Heap overflow issue in URN processing
1770360 - CVE-2019-18679 squid: Information Disclosure issue in HTTP Digest Authentication
1770365 - CVE-2019-18677 squid: Cross-Site Request Forgery issue in HTTP Request processing
1770371 - CVE-2019-12523 squid: Improper input validation in URI processor
1770375 - CVE-2019-18676 squid: Buffer overflow in URI processor
1798534 - CVE-2019-12528 squid: Information Disclosure issue in FTP Gateway
1798540 - CVE-2020-8449 squid: Improper input validation issues in HTTP Request processing
1798552 - CVE-2020-8450 squid: Buffer overflow in reverse-proxy configurations
1817121 - CVE-2019-18860 squid: Mishandled HTML in the host parameter to cachemgr.cgi results in insecure behaviour
1827558 - CVE-2019-12520 squid: Improper input validation in request allows for proxy manipulation
1827562 - CVE-2019-12521 squid: Off-by-one error in addStackElement allows for heap buffer overflow and crash
1827570 - CVE-2019-12524 squid: Improper access restriction in url_regex may lead to security bypass
1852550 - CVE-2020-15049 squid: Request smuggling and poisoning attack against the HTTP cache
1852554 - CVE-2020-14058 squid: DoS in TLS handshake
1871705 - CVE-2020-24606 squid: Improper input validation could result in a DoS