openEuler 20.03 LTS SP1 update for glibc
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-33574 |
| CWE-ID | CWE-416 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
openEuler Operating systems & Components / Operating system glibc-help Operating systems & Components / Operating system package or component glibc-debugsource Operating systems & Components / Operating system package or component nscd Operating systems & Components / Operating system package or component glibc-nss-devel Operating systems & Components / Operating system package or component glibc-debuginfo Operating systems & Components / Operating system package or component glibc-devel Operating systems & Components / Operating system package or component glibc-locale-source Operating systems & Components / Operating system package or component nss_modules Operating systems & Components / Operating system package or component glibc-common Operating systems & Components / Operating system package or component glibc-debugutils Operating systems & Components / Operating system package or component glibc-benchtests Operating systems & Components / Operating system package or component glibc-all-langpacks Operating systems & Components / Operating system package or component libnsl Operating systems & Components / Operating system package or component glibc Operating systems & Components / Operating system package or component |
| Vendor | openEuler |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Use-after-free
EUVDB-ID: #VU54560
Risk: High
CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2021-33574
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in the mq_notify() function in the GNU C Library. A remote attacker can force the library to 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 or possibly remote code execution.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationInstall updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS SP1
glibc-help: before 2.28-69
glibc-debugsource: before 2.28-69
nscd: before 2.28-69
glibc-nss-devel: before 2.28-69
glibc-debuginfo: before 2.28-69
glibc-devel: before 2.28-69
glibc-locale-source: before 2.28-69
nss_modules: before 2.28-69
glibc-common: before 2.28-69
glibc-debugutils: before 2.28-69
glibc-benchtests: before 2.28-69
glibc-all-langpacks: before 2.28-69
libnsl: before 2.28-69
glibc: before 2.28-69
CPE2.3- cpe:2.3:o:openeuler:openeuler:20.03:LTS SP1:*:*:*:*:*:*
- cpe:2.3:o:openeuler:glibc-help:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:glibc-debugsource:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:nscd:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:glibc-nss-devel:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:glibc-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:glibc-devel:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:glibc-locale-source:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:nss_modules:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:glibc-common:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:glibc-debugutils:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:glibc-benchtests:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:glibc-all-langpacks:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:libnsl:*:*:*:*:*:openeuler:*:*
- cpe:2.3:o:openeuler:glibc:*:*:*:*:*:openeuler:*:*
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1239
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
