Denial of service in Varnish Cache
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-15892 |
| CWE-ID | CWE-617 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Varnish Cache Server applications / IDS/IPS systems, Firewalls and proxy servers |
| Vendor | Varnish Software |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Reachable Assertion
EUVDB-ID: #VU20863
Risk: Low
CVSSv3.1: 3.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-15892
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 parsing HTTP/1 requests. A remote attacker can send specially crafted HTTP/1 requests to the affected server and trigger application restart, resulting in a denial of service (DoS) attack.
Install updates from vendor's website.
Vulnerable software versionsVarnish Cache: 6.0.0 - 6.2.0
External linkshttp://varnish-cache.org/security/VSV00003.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
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.
