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Red Hat Enterprise Linux 8: RHSA-2020-4743-01 Moderate Security Notice

red hat
Calendar Grey November 4, 2020
Dist Redhat Esm H88
Red Hat releases incremental security patches for squid:4 component in Enterprise Linux 8, tackling several vulnerabilities.
An update for the squid:4 module is now available for Red Hat Enterprise Linux 8

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.

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.

Topics%20covered

Topics Covered

security advisory moderate red hat bug fix service update squid security risk

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

Read the Full Advisory


Advisory ID: RHSA-2020:4743-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4743
Issue date: 2020-11-03

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.

Topics%20covered

Topics Covered

security advisory moderate red hat bug fix service update squid security risk

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

Read the Full Advisory

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