CVE-2020-35452 : Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can cause a stack overflow in mod_auth_digest. There is no report of this overflow being exploitable, nor the Apache HTTP Server team could create one, though some particular compiler and/or compilation option might make it possible, with limited consequences anyway due to the size (a single byte) and the value (zero byte) of the overflow

Published 2021-06-10 07:15:07

Updated 2021-12-01 21:32:22

Source Apache Software Foundation

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Products affected by CVE-2020-35452

Debian » Debian Linux » Version: 9.0
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Matching versions
Debian » Debian Linux » Version: 10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Matching versions
Apache » Http Server
Versions from including (>=) 2.4.0 and up to, including, (<=) 2.4.46
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
Matching versions
Oracle » Enterprise Manager Ops Center » Version: 12.4.0.0
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*
Matching versions
Oracle » Instantis Enterprisetrack » Version: 17.1
cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*
Matching versions
Oracle » Instantis Enterprisetrack » Version: 17.2
cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*
Matching versions
Oracle » Instantis Enterprisetrack » Version: 17.3
cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*
Matching versions
Oracle » Zfs Storage Appliance Kit » Version: 8.8
cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 34
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 35
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2020-35452

Top countries where our scanners detected CVE-2020-35452

Top open port discovered on systems with this issue 80

IPs affected by CVE-2020-35452 8,561,024

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2020-35452!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2020-35452

EPSS FAQ

6.56%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 90 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-35452

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:P	8.6	6.4	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
7.3	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L	3.9	3.4	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: Low Availability: Low

CWE ids for CVE-2020-35452

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-35452

http://www.openwall.com/lists/oss-security/2021/06/10/5

oss-security - CVE-2020-35452: Apache httpd: mod_auth_digest possible stack overflow by one nul byte
Mailing List;Third Party Advisory
https://www.debian.org/security/2021/dsa-4937

Debian -- Security Information -- DSA-4937-1 apache2
Third Party Advisory

CVEs referencing this url
https://lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd@%3Cdev.httpd.apache.org%3E

Pony Mail!
Mailing List;Vendor Advisory

CVEs referencing this url
https://lists.apache.org/thread.html/re026d3da9d7824bd93b9f871c0fdda978d960c7e62d8c43cba8d0bf3%40%3Ccvs.httpd.apache.org%3E

svn commit: r48071 - in /release/httpd: Announcement2.4.html Announcement2.4.txt CHANGES_2.4 CHANGES_2.4.48 CURRENT-IS-2.4.46 CURRENT-IS-2.4.48 - Pony Mail
Mailing List;Release Notes;Vendor Advisory

CVEs referencing this url
https://security.gentoo.org/glsa/202107-38

Apache: Multiple vulnerabilities (GLSA 202107-38) — Gentoo security
Third Party Advisory

CVEs referencing this url
https://www.oracle.com/security-alerts/cpuoct2021.html

Oracle Critical Patch Update Advisory - October 2021
Third Party Advisory

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2021/07/msg00006.html

[SECURITY] [DLA 2706-1] apache2 security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/

[SECURITY] Fedora 35 Update: httpd-2.4.49-1.fc35 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.apache.org/thread.html/rccb1b8225583a48c6360edc7a93cc97ae8b0215791e455dc607e7602@%3Cannounce.httpd.apache.org%3E

CVE-2020-35452: mod_auth_digest possible stack overflow by one nul byte - Pony Mail
Mailing List;Vendor Advisory
https://security.netapp.com/advisory/ntap-20210702-0001/

June 2021 Apache HTTP Server Vulnerabilities in NetApp Products | NetApp Product Security
Third Party Advisory

CVEs referencing this url
http://httpd.apache.org/security/vulnerabilities_24.html

httpd 2.4 vulnerabilities - The Apache HTTP Server Project
Vendor Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/

[SECURITY] Fedora 34 Update: httpd-2.4.49-1.fc34 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url