Reachable Assertion in openldap (Alpine package)
| 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 Subscribe |
openldap (Alpine package) Operating systems & Components / Operating system package or component |
| Vendor | Alpine Linux Development Team |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Reachable Assertion
EUVDB-ID: #VU50779
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
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.
Install update from vendor's website.
Vulnerable software versionsopenldap (Alpine package): 2.4.24-r0 - 2.4.57-r0
External linkshttp://git.alpinelinux.org/aports/commit/?id=27516c3f4a8ac4b9e0fd96dfd6efb792d1a2f17a
http://git.alpinelinux.org/aports/commit/?id=a2dc275fa79022f02431a3557b92a800d0dbc076
http://git.alpinelinux.org/aports/commit/?id=ce26f40be4045873aaf524c46edf771351e4af15
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.
