Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-27212 |
CWE-ID | CWE-617 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software |
openldap (Debian package) Operating systems & Components / Operating system package or component |
Vendor | Debian |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU50779
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-27212
CWE-ID:
CWE-617 - Reachable Assertion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a reachable assertion when processing LDAP packets within the issuerAndThisUpdateCheck() function in schema_init.c. A remote attacker can send a specially crafted packet with a short timestamp to the slapd and perform a denial of service (DoS) attack.
Update openldap package to version 2.4.47+dfsg-3+deb10u6.
Vulnerable software versionsopenldap (Debian package): 2.4.10-2+lenny1 - 2.4.56+dfsg-1
CPE2.3https://www.debian.org/security/2021/dsa-4860
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.