CVE-2019-15892
High
Description
An issue was discovered in Varnish Cache before 6.0.4 LTS, and 6.1.x and 6.2.x before 6.2.1. An HTTP/1 parsing failure allows a remote attacker to trigger an assert by sending crafted HTTP/1 requests. The assert will cause an automatic restart with a clean cache, which makes it a Denial of Service attack.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Varnish-software Varnish Cache
PublishedSep 3, 2019
First seenSep 3, 2019
How to fix
Update
- varnish-software varnish_cache6.0.4 or later
- varnish_cache_project varnish_cache6.2.1 or later
Vendor advisories
- debian.org/security/2019/dsa-4514
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KLSF54TDJWJLINIFEW5V5BKDNY5EQRR3/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3OEOCYRU43TWEU2C65F3D6GK64MSWNNK/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DBAQF6UDRSTURGINIMSMLJR4PTDYWA7C/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| varnish-software varnish_cache | 6.0.0 ≤ v < 6.0.4 | 6.0.4 |
| varnish_cache_project varnish_cache | 6.1.0 ≤ v ≤ 6.1.1, 6.2.0 ≤ v < 6.2.1 | 6.2.1 |
| debian debian_linux | 10.0 | — |
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