Reachable Assertion in openldap (Alpine package)



Published: 2020-10-30
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-25710
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: #VU48515

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-2020-25710

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion when processing LDAP requests in slapd within the csnNormalize23() function in schema_init.c. A remote attacker can send a specially crafted packet to the server, trigger an assertion failure and crash the daemon.

Mitigation

Install update from vendor's website.

Vulnerable software versions

openldap (Alpine package): 2.4.24-r0 - 2.4.56-r0

External links

http://git.alpinelinux.org/aports/commit/?id=14d739b8cb4d55b4740d6b00583bfb451a13d5a1


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.



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