openEuler update for httpd



Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2021-36160
CVE-2021-34798
CVE-2021-40438
CWE-ID CWE-125
CWE-476
CWE-918
Exploitation vector Network
Public exploit Vulnerability #3 is being exploited in the wild.
Vulnerable software
 openEuler
Operating systems & Components / Operating system

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

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

mod_session
Operating systems & Components / Operating system package or component

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

mod_proxy_html
Operating systems & Components / Operating system package or component

mod_ldap
Operating systems & Components / Operating system package or component

httpd-debuginfo
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

mod_md
Operating systems & Components / Operating system package or component

mod_ssl
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) Out-of-bounds read

EUVDB-ID: #VU56680

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-2021-36160

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition in the mod_proxy_uwsgi module in Apache HTTP Server. A remote attacker can send an HTTP request with specially crafted uri-path, trigger an out-of-bounds read and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP2

httpd-filesystem: before 2.4.43-9

httpd-help: before 2.4.43-9

mod_session: before 2.4.43-9

httpd-debugsource: before 2.4.43-9

mod_proxy_html: before 2.4.43-9

mod_ldap: before 2.4.43-9

httpd-debuginfo: before 2.4.43-9

httpd-tools: before 2.4.43-9

httpd-devel: before 2.4.43-9

mod_md: before 2.4.43-9

mod_ssl: before 2.4.43-9

httpd: before 2.4.43-9

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1369


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) NULL pointer dereference

EUVDB-ID: #VU56681

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-2021-34798

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can send a specially crafted HTTP request to the affected web server and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP2

httpd-filesystem: before 2.4.43-9

httpd-help: before 2.4.43-9

mod_session: before 2.4.43-9

httpd-debugsource: before 2.4.43-9

mod_proxy_html: before 2.4.43-9

mod_ldap: before 2.4.43-9

httpd-debuginfo: before 2.4.43-9

httpd-tools: before 2.4.43-9

httpd-devel: before 2.4.43-9

mod_md: before 2.4.43-9

mod_ssl: before 2.4.43-9

httpd: before 2.4.43-9

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1369


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) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU56678

Risk: High

CVSSv4.0: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:L/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2021-40438

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Exploit availability: Yes

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input within the mod_proxy module in Apache HTTP Server. A remote attacker can send a specially crafted HTTP request with a chosen uri-path and trick the web server to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP2

httpd-filesystem: before 2.4.43-9

httpd-help: before 2.4.43-9

mod_session: before 2.4.43-9

httpd-debugsource: before 2.4.43-9

mod_proxy_html: before 2.4.43-9

mod_ldap: before 2.4.43-9

httpd-debuginfo: before 2.4.43-9

httpd-tools: before 2.4.43-9

httpd-devel: before 2.4.43-9

mod_md: before 2.4.43-9

mod_ssl: before 2.4.43-9

httpd: before 2.4.43-9

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1369


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?

Yes. This vulnerability is being exploited in the wild.



###SIDEBAR###