RHSA-2021:2472 - Security Advisory

Topic

Updated packages that provide Red Hat JBoss Core Services Pack Apache Server 2.4.37 and fix several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7 and Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

This release adds the new Apache HTTP Server 2.4.37 Service Pack 8 packages that are part of the JBoss Core Services offering.

This release serves as a replacement for Red Hat JBoss Core Services Pack Apache Server 2.4.37 Service Pack 7 and includes bug fixes and enhancements. Refer to the Release Notes for information on the most significant bug fixes and enhancements included in this release.

Security Fix(es):

• curl: Use-after-free in TLS session handling when using OpenSSL TLS backend (CVE-2021-22901)
• httpd: NULL pointer dereference on specially crafted HTTP/2 request (CVE-2021-31618)
• libcurl: partial password leak over DNS on HTTP redirect (CVE-2020-8169)
• curl: FTP PASV command response can cause curl to connect to arbitrary host (CVE-2020-8284)
• curl: Malicious FTP server can trigger stack overflow when CURLOPT_CHUNK_BGN_FUNCTION is used (CVE-2020-8285)
• curl: Inferior OCSP verification (CVE-2020-8286)
• curl: Leak of authentication credentials in URL via automatic Referer (CVE-2021-22876)
• curl: TLS 1.3 session ticket mix-up with HTTPS proxy host (CVE-2021-22890)

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.

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 the updated packages, the httpd daemon will be restarted automatically. Applications using the APR libraries, such as httpd, must be restarted for this update to take effect.

Affected Products

• Red Hat JBoss Core Services 1 for RHEL 8 x86_64
• Red Hat JBoss Core Services 1 for RHEL 7 x86_64

Fixes

• BZ - 1847916 - CVE-2020-8169 libcurl: partial password leak over DNS on HTTP redirect
• BZ - 1902667 - CVE-2020-8284 curl: FTP PASV command response can cause curl to connect to arbitrary host
• BZ - 1902687 - CVE-2020-8285 curl: Malicious FTP server can trigger stack overflow when CURLOPT_CHUNK_BGN_FUNCTION is used
• BZ - 1906096 - CVE-2020-8286 curl: Inferior OCSP verification
• BZ - 1941964 - CVE-2021-22876 curl: Leak of authentication credentials in URL via automatic Referer
• BZ - 1941965 - CVE-2021-22890 curl: TLS 1.3 session ticket mix-up with HTTPS proxy host
• BZ - 1963146 - CVE-2021-22901 curl: Use-after-free in TLS session handling when using OpenSSL TLS backend
• BZ - 1968013 - CVE-2021-31618 httpd: NULL pointer dereference on specially crafted HTTP/2 request

CVEs

• CVE-2020-8169
• CVE-2020-8284
• CVE-2020-8285
• CVE-2020-8286
• CVE-2021-22876
• CVE-2021-22890
• CVE-2021-22901

References

• https://access.redhat.com/security/updates/classification/#important