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mageiaGentoo FoundationMGASA-2021-0439
HistorySep 23, 2021 - 7:49 a.m.

Updated apache packages fix security vulnerability

2021-09-2307:49:29
Gentoo Foundation
advisories.mageia.org
44
apache
security
vulnerabilities
http/2
mod_proxy
cve-2021-33193
cve-2021-34798
cve-2021-36160
dos
ap_escape_quotes
buffer overflow
mod_proxy
origin server

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.967

Percentile

99.7%

A crafted method sent through HTTP/2 will bypass validation and be forwarded by mod_proxy, which can lead to request splitting or cache poisoning. (CVE-2021-33193) Malformed requests may cause the server to dereference a NULL pointer. (CVE-2021-34798) A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). (CVE-2021-36160) ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. (CVE-2021-39275) A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. (CVE-2021-40438)

OSVersionArchitecturePackageVersionFilename
Mageia8noarchapache< 2.4.49-1apache-2.4.49-1.mga8

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.967

Percentile

99.7%