CVE-2019-20637 is a vulnerability in Varnish Cache versions prior to 6.0.5 LTS, 6.2.2, and 6.3.1, affecting various openSUSE and Varnish Cache products. The flaw involves a pointer not being cleared between client requests within the same connection, leading to information disclosure from the connection workspace, including data from previous requests or VCL-related temporary headers. Rated with a CVSS score of 7.5 (HIGH), this vulnerability is network-exploitable with low attack complexity, potentially exposing sensitive information without requiring user interaction. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 6.1.0, < 6.2.2CPE matchmatch criteria | cpe:2.3:a:varnish-cache:varnish_cache:*:*:*:*:-:*:*:* | ||
>= 6.3.0, < 6.3.1CPE matchmatch criteria | cpe:2.3:a:varnish-cache:varnish_cache:*:*:*:*:-:*:*:* | ||
>= 6.0.0, < 6.0.5CPE matchmatch criteria | cpe:2.3:a:varnish-software:varnish_cache:*:*:*:*:lts:*:*:* | ||
15.0CPE matchmatch criteria | cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:* | ||
15.1CPE matchmatch criteria | cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.