CVE-2020-1927

In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL.

In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL.

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

The following packages have been upgraded to a later upstream version: mod_http2 (1.15.7). (BZ#1814236)

Security Fix(es):

• httpd: memory corruption on early pushes (CVE-2019-10081)

• httpd: read-after-free in h2 connection shutdown (CVE-2019-10082)

• httpd: null-pointer dereference in mod_remoteip (CVE-2019-10097)

• httpd: mod_rewrite configurations vulnerable to open redirect (CVE-2020-1927)

• httpd: mod_http2: DoS via slow, unneeded request bodies (CVE-2018-17189)

• httpd: mod_http2: read-after-free on a string compare (CVE-2019-0196)

• httpd: mod_http2: possible crash on late upgrade (CVE-2019-0197)

• httpd: limited cross-site scripting in mod_proxy error page (CVE-2019-10092)

• httpd: mod_rewrite potential open redirect (CVE-2019-10098)

• httpd: mod_proxy_ftp use of uninitialized value (CVE-2020-1934)

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 Rocky Linux 8.3 Release Notes linked from the References section.

In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL.

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

The following packages have been upgraded to a later upstream version: mod_http2 (1.15.7). (BZ#1814236)

Security Fix(es):

• httpd: memory corruption on early pushes (CVE-2019-10081)

• httpd: read-after-free in h2 connection shutdown (CVE-2019-10082)

• httpd: null-pointer dereference in mod_remoteip (CVE-2019-10097)

• httpd: mod_rewrite configurations vulnerable to open redirect (CVE-2020-1927)

• httpd: mod_http2: DoS via slow, unneeded request bodies (CVE-2018-17189)

• httpd: mod_http2: read-after-free on a string compare (CVE-2019-0196)

• httpd: mod_http2: possible crash on late upgrade (CVE-2019-0197)

• httpd: limited cross-site scripting in mod_proxy error page (CVE-2019-10092)

• httpd: mod_rewrite potential open redirect (CVE-2019-10098)

• httpd: mod_proxy_ftp use of uninitialized value (CVE-2020-1934)

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 AlmaLinux Release Notes linked from the References section.

In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL.

Updated apache packages fix security vulnerabilities:

In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an unexpected URL within the request URL (CVE-2020-1927).

In Apache HTTP Server 2.4.0 to 2.4.41, mod_proxy_ftp may use uninitialized memory when proxying to a malicious FTP server (CVE-2020-1934).

This update for apache2 fixes the following issues:

• CVE-2020-1934: mod_proxy_ftp may use uninitialized memory when proxying to a malicious FTP server (bsc#1168404).
• CVE-2020-1927: mod_rewrite configurations vulnerable to open redirect (bsc#1168407).
• CVE-2020-1938: mod_proxy_ajp: Add 'secret' parameter to proxy workers to implement legacy AJP13 authentication (bsc#1169066).

This update was imported from the SUSE:SLE-15:Update update project.

This update for apache2 fixes the following issues:

• CVE-2020-1934: mod_proxy_ftp may use uninitialized memory when proxying to a malicious FTP server (bsc#1168404).
• CVE-2020-1927: mod_rewrite configurations vulnerable to open redirect (bsc#1168407).
• CVE-2020-1938: mod_proxy_ajp: Add 'secret' parameter to proxy workers to implement legacy AJP13 authentication (bsc#1169066).

This update for apache2 fixes the following issues:

• CVE-2020-1934: mod_proxy_ftp may use uninitialized memory when proxying to a malicious FTP server (bsc#1168404).
• CVE-2020-1927: mod_rewrite configurations vulnerable to open redirect (bsc#1168407).
• CVE-2020-1938: mod_proxy_ajp: Add 'secret' parameter to proxy workers to implement legacy AJP13 authentication (bsc#1169066).

This update for apache2 fixes the following issues:

• CVE-2020-1934: mod_proxy_ftp may use uninitialized memory when proxying to a malicious FTP server (bsc#1168404).
• CVE-2020-1927: mod_rewrite configurations vulnerable to open redirect (bsc#1168407).
• CVE-2020-1938: mod_proxy_ajp: Add 'secret' parameter to proxy workers to implement legacy AJP13 authentication (bsc#1169066).

Fabrice Perez discovered that the Apache mod_rewrite module incorrectly handled certain redirects. A remote attacker could possibly use this issue to perform redirects to an unexpected URL. (CVE-2020-1927)

Chamal De Silva discovered that the Apache mod_proxy_ftp module incorrectly handled memory when proxying to a malicious FTP server. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2020-1934)

Felix Wilhelm discovered that the HTTP/2 implementation in Apache did not properly handle certain Cache-Digest headers. A remote attacker could possibly use this issue to cause Apache to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-9490)

Felix Wilhelm discovered that the Apache mod_proxy_uwsgi module incorrectly handled large headers. A remote attacker could use this issue to obtain sensitive information or possibly execute arbitrary code. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-11984)

Felix Wilhelm discovered that the HTTP/2 implementation in Apache did not properly handle certain logging statements. A remote attacker could possibly use this issue to cause Apache to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-11993)