Multiple vulnerabilities in Varnish Cache
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2022-45060 CVE-2022-45059 |
| CWE-ID | CWE-918 CWE-444 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Varnish Cache Server applications / IDS/IPS systems, Firewalls and proxy servers Varnish Enterprise Server applications / IDS/IPS systems, Firewalls and proxy servers |
| Vendor | Varnish Software |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Server-Side Request Forgery (SSRF)
EUVDB-ID: #VU69128
Risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2022-45060
CWE-ID:
CWE-918 - Server-Side Request Forgery (SSRF)
Exploit availability: No
DescriptionThe disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input when handling HTTP/2 requests. A remote attacker can introduce characters through the HTTP/2 pseudo-headers that are invalid in the context of an HTTP/1 request line, causing the Varnish server to produce invalid HTTP/1 requests to the backend.
Install updates from vendor's website.
Vulnerable software versionsVarnish Cache: 6.0.0 - 7.2.0
Varnish Enterprise: before 6.0.10r3
CPE2.3- cpe:2.3:a:varnish:varnish_cache:6.0.10:*:*:*:*:*:*:*
- cpe:2.3:a:varnish:varnish_cache:7.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:varnish:varnish_cache:7.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:varnish:varnish_cache:7.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:varnish:varnish_enterprise:*:*:*:*:*:*:*:*
https://docs.varnish-software.com/security/VSV00011
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.
2) Inconsistent interpretation of HTTP requests
EUVDB-ID: #VU69126
Risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2022-45059
CWE-ID:
CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform HTTP request smuggling attacks.
The vulnerability exists due to improper validation of HTTP requests. A remote attacker can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers. Among the headers that can be filtered this way are both Content-Length</code> and <code>Host, making it possible for an attacker to both break the HTTP/1 protocol framing, and bypass request to host routing in VCL.
Install updates from vendor's website.
Vulnerable software versionsVarnish Cache: 7.0.0 - 7.2.0
CPE2.3- cpe:2.3:a:varnish:varnish_cache:7.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:varnish:varnish_cache:7.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:varnish:varnish_cache:7.2.0:*:*:*:*:*:*:*
https://docs.varnish-software.com/security/VSV00010
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.
