HIGH
quagga: Incorrect AS_PATH size calculation for long paths
Published Oct 29, 2017
7.5
HIGHCVSS 3.0
EPSS 18.79%
Description
The aspath_put function in bgpd/bgp_aspath.c in Quagga before 1.2.2 allows remote attackers to cause a denial of service (session drop) via BGP UPDATE messages, because AS_PATH size calculation for long paths counts certain bytes twice and consequently constructs an invalid message.
Affected products
No data.
Configuration 2
OR
- 8.0
- 9.0
No data.
Red Hat Enterprise Linux 5
quagga
Not affected
Red Hat Enterprise Linux 6
quagga
Will not fix
Red Hat Enterprise Linux 7
quagga
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | quagga | Not affected | n/a |
| Red Hat Enterprise Linux 6 | quagga | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | quagga | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
1 other source (Red Hat) ▾
3.7 LOW Red Hat
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact Low
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
18.79% 0.18790
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.18790
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (25 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 18.79% (0.18790) | 97.20th | v5 (v2026.06.15) |
| Sep 22, 2026 | 18.79% (0.18790) | 97.15th | v5 (v2026.06.15) |
| Sep 21, 2026 | 12.75% (0.12748) | 96.15th | v5 (v2026.06.15) |
| Sep 6, 2026 | 18.79% (0.18790) | 97.09th | v5 (v2026.06.15) |
| Sep 5, 2026 | 12.75% (0.12748) | 96.06th | v5 (v2026.06.15) |
| Aug 30, 2026 | 18.79% (0.18790) | 97.07th | v5 (v2026.06.15) |
| Aug 28, 2026 | 12.75% (0.12748) | 96.04th | v5 (v2026.06.15) |
| Aug 24, 2026 | 18.79% (0.18790) | 97.05th | v5 (v2026.06.15) |
| Aug 23, 2026 | 12.75% (0.12748) | 96.03th | v5 (v2026.06.15) |
| Jun 15, 2026 | 18.79% (0.18790) | 96.91th | v5 (v2026.06.15) |
| Apr 5, 2026 | 0.82% (0.00818) | 74.33th | v4 (v2025.03.14) |
| Jul 20, 2024 | 1.12% (0.01122) | 84.77th | v3 (v2023.03.01) |
| May 8, 2024 | 1.12% (0.01122) | 84.53th | v3 (v2023.03.01) |
| May 25, 2023 | 1.12% (0.01122) | 82.53th | v3 (v2023.03.01) |
| May 8, 2023 | 1.01% (0.01009) | 81.46th | v3 (v2023.03.01) |
| Mar 22, 2023 | 0.87% (0.00866) | 79.86th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.21% (0.01215) | 83.10th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.94% (0.01943) | 48.45th | v1 |
| Jan 6, 2022 | 1.94% (0.01943) | 47.92th | v1 |
| Sep 1, 2021 | 1.94% (0.01943) | 76.51th | v1 |
| Apr 14, 2021 | 1.94% (0.01943) | 0.00th | v1 |
Weaknesses (2)
References (9)
- http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txt x_refsource_MISCIssue TrackingThird Party Advisory
- http://www.debian.org/security/2017/dsa-4011 vendor-advisoryx_refsource_DEBIANIssue TrackingThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-16227 Vendor Advisory
- https://bugs.debian.org/879474 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1509291 Issue Tracking
- https://git.savannah.gnu.org/cgit/quagga.git/commit/?id=7a42b78be9a4108d98833069a88e6fddb9285008 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.html x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-16227
- https://www.cve.org/CVERecord?id=CVE-2017-16227
| Link | Providers | Tags |
|---|---|---|
| http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txt | x_refsource_MISCIssue TrackingThird Party Advisory | |
| http://www.debian.org/security/2017/dsa-4011 | vendor-advisoryx_refsource_DEBIANIssue TrackingThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2017-16227 | Vendor Advisory | |
| https://bugs.debian.org/879474 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1509291 | Issue Tracking | |
| https://git.savannah.gnu.org/cgit/quagga.git/commit/?id=7a42b78be9a4108d98833069a88e6fddb9285008 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.html | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-16227 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-16227 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Oct 29, 2017
Updated Aug 5, 2024
Reserved Oct 29, 2017
Link CVE-2017-16227
CISA Vulnrichment
Updated n/a