c-ares: Single byte out of buffer write
Published Oct 3, 2016
9.8
CRITICALCVSS 3.1
EPSS 8.58%
Description
Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly execute arbitrary code via a hostname with an escaped trailing dot.
Affected products
No data.
Configuration 1
- 1.0.0
- 1.1.0
- 1.2.0
- 1.2.1
- 1.3.0
- 1.3.1
- 1.3.2
- 1.4.0
- 1.5.0
- 1.5.1
- 1.5.2
- 1.5.3
- 1.6.0
- 1.7.0
- 1.7.1
- 1.7.2
- 1.7.3
- 1.7.4
- 1.7.5
- 1.8.0
- 1.9.0
- 1.9.1
- 1.10.0
- 1.11.0
Configuration 2
- 8.0
Configuration 3
Configuration 4
- 12.04
- 14.04
- 16.04
- 16.10
No data.
Red Hat Software Collections for Red Hat Enterprise Linux 6
rh-nodejs4-http-parser-0:2.7.0-2.el6
Fixed · RHSA-2017:0002
Red Hat Software Collections for Red Hat Enterprise Linux 6
rh-nodejs4-nodejs-0:4.6.2-4.el6
Fixed · RHSA-2017:0002
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
rh-nodejs4-http-parser-0:2.7.0-2.el6
Fixed · RHSA-2017:0002
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
rh-nodejs4-nodejs-0:4.6.2-4.el6
Fixed · RHSA-2017:0002
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-nodejs4-http-parser-0:2.7.0-2.el7
Fixed · RHSA-2017:0002
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-nodejs4-nodejs-0:4.6.2-4.el7
Fixed · RHSA-2017:0002
Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS
rh-nodejs4-http-parser-0:2.7.0-2.el7
Fixed · RHSA-2017:0002
Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS
rh-nodejs4-nodejs-0:4.6.2-4.el7
Fixed · RHSA-2017:0002
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
rh-nodejs4-http-parser-0:2.7.0-2.el7
Fixed · RHSA-2017:0002
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
rh-nodejs4-nodejs-0:4.6.2-4.el7
Fixed · RHSA-2017:0002
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS
rh-nodejs4-http-parser-0:2.7.0-2.el7
Fixed · RHSA-2017:0002
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS
rh-nodejs4-nodejs-0:4.6.2-4.el7
Fixed · RHSA-2017:0002
Red Hat Enterprise Linux 5
c-ares
Will not fix
Red Hat Enterprise Linux 6
c-ares
Will not fix
Red Hat Enterprise Linux 7
c-ares
Will not fix
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) Operational Tools
nodejs
Under investigation
Red Hat OpenShift Enterprise 2
nodejs010-nodejs
Not affected
Red Hat OpenShift Enterprise 3
nodejs
Not affected
Red Hat Software Collections
nodejs010-c-ares
Will not fix
Red Hat Software Collections
nodejs010-nodejs
Will not fix
Red Hat Software Collections
rh-nodejs6-nodejs
Not affected
Red Hat Software Collections
rh-nodejs8-nodejs
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | rh-nodejs4-http-parser-0:2.7.0-2.el6 | Fixed | RHSA-2017:0002 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | rh-nodejs4-nodejs-0:4.6.2-4.el6 | Fixed | RHSA-2017:0002 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | rh-nodejs4-http-parser-0:2.7.0-2.el6 | Fixed | RHSA-2017:0002 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | rh-nodejs4-nodejs-0:4.6.2-4.el6 | Fixed | RHSA-2017:0002 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-nodejs4-http-parser-0:2.7.0-2.el7 | Fixed | RHSA-2017:0002 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-nodejs4-nodejs-0:4.6.2-4.el7 | Fixed | RHSA-2017:0002 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS | rh-nodejs4-http-parser-0:2.7.0-2.el7 | Fixed | RHSA-2017:0002 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS | rh-nodejs4-nodejs-0:4.6.2-4.el7 | Fixed | RHSA-2017:0002 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | rh-nodejs4-http-parser-0:2.7.0-2.el7 | Fixed | RHSA-2017:0002 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | rh-nodejs4-nodejs-0:4.6.2-4.el7 | Fixed | RHSA-2017:0002 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS | rh-nodejs4-http-parser-0:2.7.0-2.el7 | Fixed | RHSA-2017:0002 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS | rh-nodejs4-nodejs-0:4.6.2-4.el7 | Fixed | RHSA-2017:0002 |
| Red Hat Enterprise Linux 5 | c-ares | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | c-ares | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | c-ares | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) Operational Tools | nodejs | Under investigation | n/a |
| Red Hat OpenShift Enterprise 2 | nodejs010-nodejs | Not affected | n/a |
| Red Hat OpenShift Enterprise 3 | nodejs | Not affected | n/a |
| Red Hat Software Collections | nodejs010-c-ares | Will not fix | n/a |
| Red Hat Software Collections | nodejs010-nodejs | Will not fix | n/a |
| Red Hat Software Collections | rh-nodejs6-nodejs | Not affected | n/a |
| Red Hat Software Collections | rh-nodejs8-nodejs | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (31 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 8.58% (0.08583) | 94.92th | v5 (v2026.06.15) |
| Jun 15, 2026 | 8.65% (0.08653) | 94.41th | v5 (v2026.06.15) |
| May 28, 2026 | 18.09% (0.18086) | 95.28th | v4 (v2025.03.14) |
| May 13, 2026 | 20.32% (0.20315) | 95.58th | v4 (v2025.03.14) |
| Mar 8, 2026 | 18.16% (0.18165) | 95.08th | v4 (v2025.03.14) |
| Jan 24, 2026 | 15.55% (0.15546) | 94.48th | v4 (v2025.03.14) |
| Jan 18, 2026 | 11.90% (0.11904) | 93.53th | v4 (v2025.03.14) |
| Dec 30, 2025 | 19.34% (0.19344) | 95.17th | v4 (v2025.03.14) |
| Dec 28, 2025 | 20.43% (0.20428) | 95.35th | v4 (v2025.03.14) |
| Dec 27, 2025 | 22.76% (0.22756) | 95.70th | v4 (v2025.03.14) |
| Dec 21, 2025 | 20.43% (0.20428) | 95.35th | v4 (v2025.03.14) |
| Dec 14, 2025 | 22.85% (0.22848) | 95.69th | v4 (v2025.03.14) |
| Oct 28, 2025 | 19.37% (0.19372) | 95.11th | v4 (v2025.03.14) |
| Oct 27, 2025 | 21.62% (0.21619) | 95.49th | v4 (v2025.03.14) |
| Oct 1, 2025 | 19.37% (0.19372) | 95.20th | v4 (v2025.03.14) |
| Aug 25, 2025 | 21.62% (0.21619) | 95.51th | v4 (v2025.03.14) |
| Aug 17, 2025 | 20.45% (0.20445) | 95.31th | v4 (v2025.03.14) |
| Jun 6, 2025 | 22.41% (0.22414) | 95.49th | v4 (v2025.03.14) |
| May 30, 2025 | 17.79% (0.17794) | 94.76th | v4 (v2025.03.14) |
| Mar 30, 2025 | 15.77% (0.15774) | 94.16th | v4 (v2025.03.14) |
| Mar 29, 2025 | 23.24% (0.23244) | 93.46th | v4 (v2025.03.14) |
| Mar 25, 2025 | 15.77% (0.15774) | 94.11th | v4 (v2025.03.14) |
| Mar 17, 2025 | 18.09% (0.18086) | 94.68th | v4 (v2025.03.14) |
| Dec 12, 2024 | 4.62% (0.04617) | 92.87th | v3 (v2023.03.01) |
| Nov 26, 2023 | 4.52% (0.04517) | 91.57th | v3 (v2023.03.01) |
| Nov 8, 2023 | 5.57% (0.05567) | 92.43th | v3 (v2023.03.01) |
| Sep 15, 2023 | 5.70% (0.05701) | 92.43th | v3 (v2023.03.01) |
| Mar 7, 2023 | 6.89% (0.06895) | 92.79th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.70% (0.06698) | 91.56th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.70% (0.06698) | 90.75th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.70% (0.06698) | 78.74th | v2 (v2022.01.01) |
References (13)
- http://rhn.redhat.com/errata/RHSA-2017-0002.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2016/dsa-3682 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/93243 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-3143-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2016-5180 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1380463 Issue Tracking
- https://c-ares.haxx.se/CVE-2016-5180.patch x_refsource_CONFIRM
- https://c-ares.haxx.se/adv_20160929.html x_refsource_CONFIRM
- https://googlechromereleases.blogspot.in/2016/09/stable-channel-updates-for-chrome-os.html x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2016-5180
- https://security.gentoo.org/glsa/201701-28 vendor-advisoryx_refsource_GENTOO
- https://source.android.com/security/bulletin/2017-01-01.html x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2016-5180
| Link | Providers | Tags |
|---|---|---|
| http://rhn.redhat.com/errata/RHSA-2017-0002.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.debian.org/security/2016/dsa-3682 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/93243 | vdb-entryx_refsource_BID | |
| http://www.ubuntu.com/usn/USN-3143-1 | vendor-advisoryx_refsource_UBUNTU | |
| https://access.redhat.com/security/cve/CVE-2016-5180 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1380463 | Issue Tracking | |
| https://c-ares.haxx.se/CVE-2016-5180.patch | x_refsource_CONFIRM | |
| https://c-ares.haxx.se/adv_20160929.html | x_refsource_CONFIRM | |
| https://googlechromereleases.blogspot.in/2016/09/stable-channel-updates-for-chrome-os.html | x_refsource_CONFIRM | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-5180 | ||
| https://security.gentoo.org/glsa/201701-28 | vendor-advisoryx_refsource_GENTOO | |
| https://source.android.com/security/bulletin/2017-01-01.html | x_refsource_CONFIRM | |
| https://www.cve.org/CVERecord?id=CVE-2016-5180 |
Change history (0)
No recorded changes yet.