Vulnerability Details : CVE-2021-33574
Potential exploit
The mq_notify function in the GNU C Library (aka glibc) versions 2.32 and 2.33 has a use-after-free. It may use the notification thread attributes object (passed through its struct sigevent parameter) after it has been freed by the caller, leading to a denial of service (application crash) or possibly unspecified other impact.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2021-33574
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:glibc:2.32:*:*:*:*:*:*:*
- cpe:2.3:a:gnu:glibc:2.33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
- Netapp » E-series Santricity Os ControllerVersions from including (>=) 11.0 and up to, including, (<=) 11.70.1cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-33574
0.12%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 28 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-33574
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-33574
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-33574
-
https://security.gentoo.org/glsa/202107-07
glibc: Multiple vulnerabilities (GLSA 202107-07) — Gentoo securityThird Party Advisory
-
https://security.netapp.com/advisory/ntap-20210629-0005/
CVE-2021-33574 GNU C Library (glibc) Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KJYYIMDDYOHTP2PORLABTOHYQYYREZDD/
[SECURITY] Fedora 33 Update: glibc-2.32-8.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://sourceware.org/bugzilla/show_bug.cgi?id=27896#c1
27896 – (CVE-2021-33574) mq_notify does not handle separately allocated thread attributes (CVE-2021-33574)Issue Tracking
-
https://sourceware.org/bugzilla/show_bug.cgi?id=27896
27896 – mq_notify does not handle separately allocated thread attributesExploit;Issue Tracking;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
[SECURITY] [DLA 3152-1] glibc security updateMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBUUWUGXVILQXVWEOU7N42ICHPJNAEUP/
[SECURITY] Fedora 34 Update: glibc-2.33-16.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
Jump to