Amazon Linux AMI update for httpd24

1) Buffer overflow

EUVDB-ID: #VU35713

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-11984

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in od_proxy_uwsgi module. A remote attacker can send a specially crafted request to the web server, trigger memory corruption and gain access to sensitive information or execute arbitrary code on the target system.

Mitigation

Update the affected packages:

i686:
    mod24_proxy_html-2.4.46-1.90.amzn1.i686
    httpd24-tools-2.4.46-1.90.amzn1.i686
    httpd24-2.4.46-1.90.amzn1.i686
    httpd24-debuginfo-2.4.46-1.90.amzn1.i686
    mod24_md-2.4.46-1.90.amzn1.i686
    mod24_ssl-2.4.46-1.90.amzn1.i686
    mod24_session-2.4.46-1.90.amzn1.i686
    mod24_ldap-2.4.46-1.90.amzn1.i686
    httpd24-devel-2.4.46-1.90.amzn1.i686

noarch:
    httpd24-manual-2.4.46-1.90.amzn1.noarch

src:
    httpd24-2.4.46-1.90.amzn1.src

x86_64:
    httpd24-devel-2.4.46-1.90.amzn1.x86_64
    mod24_md-2.4.46-1.90.amzn1.x86_64
    httpd24-tools-2.4.46-1.90.amzn1.x86_64
    httpd24-2.4.46-1.90.amzn1.x86_64
    mod24_ssl-2.4.46-1.90.amzn1.x86_64
    mod24_session-2.4.46-1.90.amzn1.x86_64
    mod24_ldap-2.4.46-1.90.amzn1.x86_64
    mod24_proxy_html-2.4.46-1.90.amzn1.x86_64
    httpd24-debuginfo-2.4.46-1.90.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

httpd24: before 2.4.46-1.90

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
• cpe:2.3:o:amazon_web_services:httpd24:*:*:*:*:*:amazon_linux_ami:*:*

External links

https://alas.aws.amazon.com/ALAS-2024-1951.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.

2) Resource management error

EUVDB-ID: #VU35854

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-2020-11993

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources within the application while processing HTTP/2 requests with enabled trace/debug for HTTP/2 connections. A remote attacker can send specially crafted HTTP/2 requests to Apache HTTP Server and force it to make logging statements on wrong connection for certain traffic edge patterns. This results in concurrent use of memory pools for separate connections and triggers denial of service condition.

Mitigation

Update the affected packages:

i686:
    mod24_proxy_html-2.4.46-1.90.amzn1.i686
    httpd24-tools-2.4.46-1.90.amzn1.i686
    httpd24-2.4.46-1.90.amzn1.i686
    httpd24-debuginfo-2.4.46-1.90.amzn1.i686
    mod24_md-2.4.46-1.90.amzn1.i686
    mod24_ssl-2.4.46-1.90.amzn1.i686
    mod24_session-2.4.46-1.90.amzn1.i686
    mod24_ldap-2.4.46-1.90.amzn1.i686
    httpd24-devel-2.4.46-1.90.amzn1.i686

noarch:
    httpd24-manual-2.4.46-1.90.amzn1.noarch

src:
    httpd24-2.4.46-1.90.amzn1.src

x86_64:
    httpd24-devel-2.4.46-1.90.amzn1.x86_64
    mod24_md-2.4.46-1.90.amzn1.x86_64
    httpd24-tools-2.4.46-1.90.amzn1.x86_64
    httpd24-2.4.46-1.90.amzn1.x86_64
    mod24_ssl-2.4.46-1.90.amzn1.x86_64
    mod24_session-2.4.46-1.90.amzn1.x86_64
    mod24_ldap-2.4.46-1.90.amzn1.x86_64
    mod24_proxy_html-2.4.46-1.90.amzn1.x86_64
    httpd24-debuginfo-2.4.46-1.90.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

httpd24: before 2.4.46-1.90

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
• cpe:2.3:o:amazon_web_services:httpd24:*:*:*:*:*:amazon_linux_ami:*:*

External links

https://alas.aws.amazon.com/ALAS-2024-1951.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.

3) Input validation error

EUVDB-ID: #VU35880

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-2020-9490

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when processing Cache-Digest header in HTTP/2 request. A remote attacker can pass specially crafted HTTP/2 request to the Apache HTTP Server, trigger the server to send the HTTP/2 PUSH and perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

i686:
    mod24_proxy_html-2.4.46-1.90.amzn1.i686
    httpd24-tools-2.4.46-1.90.amzn1.i686
    httpd24-2.4.46-1.90.amzn1.i686
    httpd24-debuginfo-2.4.46-1.90.amzn1.i686
    mod24_md-2.4.46-1.90.amzn1.i686
    mod24_ssl-2.4.46-1.90.amzn1.i686
    mod24_session-2.4.46-1.90.amzn1.i686
    mod24_ldap-2.4.46-1.90.amzn1.i686
    httpd24-devel-2.4.46-1.90.amzn1.i686

noarch:
    httpd24-manual-2.4.46-1.90.amzn1.noarch

src:
    httpd24-2.4.46-1.90.amzn1.src

x86_64:
    httpd24-devel-2.4.46-1.90.amzn1.x86_64
    mod24_md-2.4.46-1.90.amzn1.x86_64
    httpd24-tools-2.4.46-1.90.amzn1.x86_64
    httpd24-2.4.46-1.90.amzn1.x86_64
    mod24_ssl-2.4.46-1.90.amzn1.x86_64
    mod24_session-2.4.46-1.90.amzn1.x86_64
    mod24_ldap-2.4.46-1.90.amzn1.x86_64
    mod24_proxy_html-2.4.46-1.90.amzn1.x86_64
    httpd24-debuginfo-2.4.46-1.90.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

httpd24: before 2.4.46-1.90

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
• cpe:2.3:o:amazon_web_services:httpd24:*:*:*:*:*:amazon_linux_ami:*:*

External links

https://alas.aws.amazon.com/ALAS-2024-1951.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.