Security Bulletin: Apache HTTP Server as used by IBM QRadar SIEM is vulnerable to buffer overflow and denial of service (CVE-2021-44790, CVE-2021-34798, CVE-2021-39275)

2022-02-2817:37:14

www.ibm.com

ibm qradar siem

apache http server

buffer overflow

denial of service

vulnerability

cve-2021-44790

cve-2021-34798

cve-2021-39275

update pack

fix pack

remediation

interim fix

EPSS

0.109

Percentile

95.2%

JSON

Summary

Apache HTTP Server as used by IBM QRadar SIEM contains multiple vulnerabilities which include buffer overflow and denial of service.

Vulnerability Details

CVEID:CVE-2021-44790
**DESCRIPTION:**Apache HTTP Server is vulnerable to a buffer overflow, caused by improper bounds checking in the mod_lua multipart parser called from Lua scripts). By sending a specially crafted request, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base score: 9.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/215686 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID:CVE-2021-34798
**DESCRIPTION:**Apache HTTP Server is vulnerable to a denial of service, caused by a NULL pointer dereference in httpd core. By sending a specially crafted request, a remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/209518 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2021-39275
**DESCRIPTION:**Apache HTTP Server is vulnerable to a buffer overflow, caused by improper bounds checking by the ap_escape_quotes() function. By sending specially crafted input, a remote attacker could write beyond the end of a buffer.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/209529 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)