Ubuntu.comUB:CVE-2019-18676CVE-2019-18676
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS
Percentile
88.1%
An issue was discovered in Squid 3.x and 4.x through 4.8. Due to incorrect
input validation, there is a heap-based buffer overflow that can result in
Denial of Service to all clients using the proxy. Severity is high due to
this vulnerability occurring before normal security checks; any remote
client that can reach the proxy port can trivially perform the attack via a
crafted URI scheme.
Notes
| Author | Note |
|---|---|
| mdeslaur | same fix as CVE-2019-12523 This was fixed in 4.x by rewriting the URI parser to use SBuf. fixed in Debian’s 3.5.23-5+deb9u2 |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 19.04 | noarch | squid | < 4.4-1ubuntu2.3 | UNKNOWN |
| ubuntu | 19.10 | noarch | squid | < 4.8-1ubuntu2.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | squid | < 4.9-2ubuntu1 | UNKNOWN |
| ubuntu | 20.10 | noarch | squid | < 4.9-2ubuntu1 | UNKNOWN |
| ubuntu | 21.04 | noarch | squid | < 4.9-2ubuntu1 | UNKNOWN |
| ubuntu | 18.04 | noarch | squid3 | < 3.5.27-1ubuntu1.7 | UNKNOWN |
| ubuntu | 16.04 | noarch | squid3 | < 3.5.12-1ubuntu7.12 | UNKNOWN |
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS
Percentile
88.1%