CVE-2019-16779: debian debian_linux
Vulnerability summary
CVE-2019-16779 is a medium (CVSS 5.9) vulnerability in debian debian_linux. EPSS estimates a 1.66% chance of exploitation in the next 30 days, higher than 76.3% of scored vulnerabilities.
Timeline
- 16-12-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
In RubyGem excon before 0.71.0, 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.
CVSS metrics
6 scores · 5 sources · 2 versions- CVE.orgCNA5.8MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:NDiffers
- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · RubygemsEcosystem advisory · calculated5.8MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:NDiffers
EPSS trend
Probability
1.66%
Chance of exploitation in the next 30 days
Percentile
76%
Versus all other CVEs
30-day change
+0.22 pp
From 1.44% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-664Improper Control of a Resource Through its LifetimeThe product does not maintain or incorrectly maintains control over a resource throughout its lifetime of creation, use, and release.
- CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
Affected systems
Opensuse3 products
- backports_sle15.0:sp1
- leapEOL15.1
- rubygem-excon&distro=openSUSE Leap 15.1< 0.59.0-lp151.3.3.1
Debian2 products
- ruby-excon< 0.60.0-2 | < 0.33.0-2+deb8u1
- debian_linuxEOL8.0
Suse2 products
- rubygem-excon&distro=SUSE Linux Enterprise Module for Containers 12< 0.52.0-12.3.8
- rubygem-excon&distro=SUSE Package Hub 15 SP1< 0.59.0-bp151.4.3.1
Excon1 product
- excon≥ < 0.71.0, < 0.71.0
Excon_project1 product
- excon< 0.71.0
RubyGems1 product
- excon< 0.71.0
Ubuntu1 product
- ruby-exconAll versions (No fix recorded)
7 vendors · 11 products
References
16 links- github.com/excon/excon/security/advisories/GHSA-q58g-455p-8vw9X Refsource CONFIRMVendor AdvisoryREPORTWEB
- github.com/excon/excon/commit/ccb57d7a422f020dc74f1de4e8fb505ab46d8a29X Refsource MISCPatchREPORTWEB
- lists.opensuse.org/opensuse-security-announce/2020-01/msg00021.htmlVendor AdvisoryX Refsource SUSEThird Party AdvisoryWEB
lists.debian.org/debian-lts-announce/2020/01/msg00015.htmlMailing ListX Refsource MLISTThird Party AdvisoryWEB- lists.opensuse.org/opensuse-security-announce/2020-01/msg00062.htmlVendor AdvisoryX Refsource SUSEThird Party AdvisoryWEB
- lists.opensuse.org/archives/…Advisory
Show all 16 references
- lists.opensuse.org/archives/…Advisory
- github.com/excon/exconPACKAGE