Denial of service in 389-ds-base
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-4091 |
| CWE-ID | CWE-416 |
| Exploitation vector | Local network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
389-ds-base Server applications / Directory software, identity management |
| Vendor | 389 Directory Server Project |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Use-after-free
EUVDB-ID: #VU60867
Risk: Medium
CVSSv3.1: 5 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-4091
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error when processing virtual attributes context in persistent searches. A remote user can send specially crafted search requests to the directory server, trigger a use-after-free error and crash the server.
Install updates from vendor's website.
Vulnerable software versions389-ds-base: 1.3.0 - 1.3.9.0
External linkshttp://bugzilla.redhat.com/show_bug.cgi?id=2030307
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
