Ubuntu.comUB:CVE-2020-15049CVE-2020-15049
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
0.01 Low
EPSS
Percentile
83.6%
An issue was discovered in http/ContentLengthInterpreter.cc in Squid before
4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can
succeed against the HTTP cache. The client sends an HTTP request with a
Content-Length header containing "+\ “-” or an uncommon shell whitespace
character prefix to the length field-value.
Notes
| Author | Note |
|---|---|
| mdeslaur | per upstream, “This attack requires an upstream server to participate in the smuggling and generate the poison response sequence.” |
References
github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5
launchpad.net/bugs/cve/CVE-2020-15049
nvd.nist.gov/vuln/detail/CVE-2020-15049
security-tracker.debian.org/tracker/CVE-2020-15049
ubuntu.com/security/notices/USN-4551-1
ubuntu.com/security/notices/USN-4895-1
www.cve.org/CVERecord?id=CVE-2020-15049
Related
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
0.01 Low
EPSS
Percentile
83.6%