openEuler 20.03 LTS update for httpd



Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2020-9490
CVE-2020-11984
CVE-2020-11993
CWE-ID CWE-20
CWE-119
CWE-399
Exploitation vector Network
Public exploit N/A
Vulnerable software
 openEuler
Operating systems & Components / Operating system

mod_ssl
Operating systems & Components / Operating system package or component

mod_session
Operating systems & Components / Operating system package or component

mod_proxy_html
Operating systems & Components / Operating system package or component

mod_md
Operating systems & Components / Operating system package or component

mod_ldap
Operating systems & Components / Operating system package or component

httpd-tools
Operating systems & Components / Operating system package or component

httpd-devel
Operating systems & Components / Operating system package or component

httpd-debugsource
Operating systems & Components / Operating system package or component

httpd-debuginfo
Operating systems & Components / Operating system package or component

httpd-help
Operating systems & Components / Operating system package or component

httpd-filesystem
Operating systems & Components / Operating system package or component

httpd
Operating systems & Components / Operating system package or component

Vendor openEuler

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) 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

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

mod_ssl: before 2.4.43-3

mod_session: before 2.4.43-3

mod_proxy_html: before 2.4.43-3

mod_md: before 2.4.43-3

mod_ldap: before 2.4.43-3

httpd-tools: before 2.4.43-3

httpd-devel: before 2.4.43-3

httpd-debugsource: before 2.4.43-3

httpd-debuginfo: before 2.4.43-3

httpd-help: before 2.4.43-3

httpd-filesystem: before 2.4.43-3

httpd: before 2.4.43-3

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2020-1045


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) 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

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

mod_ssl: before 2.4.43-3

mod_session: before 2.4.43-3

mod_proxy_html: before 2.4.43-3

mod_md: before 2.4.43-3

mod_ldap: before 2.4.43-3

httpd-tools: before 2.4.43-3

httpd-devel: before 2.4.43-3

httpd-debugsource: before 2.4.43-3

httpd-debuginfo: before 2.4.43-3

httpd-help: before 2.4.43-3

httpd-filesystem: before 2.4.43-3

httpd: before 2.4.43-3

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2020-1045


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) 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

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

mod_ssl: before 2.4.43-3

mod_session: before 2.4.43-3

mod_proxy_html: before 2.4.43-3

mod_md: before 2.4.43-3

mod_ldap: before 2.4.43-3

httpd-tools: before 2.4.43-3

httpd-devel: before 2.4.43-3

httpd-debugsource: before 2.4.43-3

httpd-debuginfo: before 2.4.43-3

httpd-help: before 2.4.43-3

httpd-filesystem: before 2.4.43-3

httpd: before 2.4.43-3

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2020-1045


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.



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