Vulnerability Details : CVE-2021-33574
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
Exploit prediction scoring system (EPSS) score for CVE-2021-33574
Probability of exploitation activity in the next 30 days: 1.39%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 85 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-33574
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
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
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Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-33574
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https://security.gentoo.org/glsa/202107-07
glibc: Multiple vulnerabilities (GLSA 202107-07) — Gentoo securityThird Party Advisory
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https://security.netapp.com/advisory/ntap-20210629-0005/
CVE-2021-33574 GNU C Library (glibc) Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
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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
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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
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https://sourceware.org/bugzilla/show_bug.cgi?id=27896
27896 – mq_notify does not handle separately allocated thread attributesExploit;Issue Tracking;Third Party Advisory
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https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
[SECURITY] [DLA 3152-1] glibc security updateMailing List;Third Party Advisory
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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
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:-:*:*:*:*:*:*:*