4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
0.008 Low
EPSS
Percentile
81.5%
There was a race condition around persistent connections, where a connection which is interrupted (such as by a timeout) would leave data on the socket. Subsequent requests would then read this data, returning content from the previous response. The race condition window appears to be short, and it would be difficult to purposefully exploit this.
The problem has been patched in 0.71.0, users should upgrade to this or a newer version (if one exists).
Users can workaround the problem by disabling persistent connections, though this may cause performance implications.
See the patch for further details.
If you have any questions or comments about this advisory:
lists.opensuse.org/opensuse-security-announce/2020-01/msg00021.html
lists.opensuse.org/opensuse-security-announce/2020-01/msg00062.html
github.com/advisories/GHSA-q58g-455p-8vw9
github.com/excon/excon/commit/ccb57d7a422f020dc74f1de4e8fb505ab46d8a29
github.com/excon/excon/security/advisories/GHSA-q58g-455p-8vw9
github.com/rubysec/ruby-advisory-db/blob/master/gems/excon/CVE-2019-16779.yml
lists.debian.org/debian-lts-announce/2020/01/msg00015.html
nvd.nist.gov/vuln/detail/CVE-2019-16779
4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
0.008 Low
EPSS
Percentile
81.5%