FRRouting FRR 7.5.1 through 9.0 and Pica8 PICOS 4.3.3.2 allow a remote attacker to cause a denial of service via a crafted BGP update with a
FRRouting FRR 7.5.1 through 9.0 and Pica8 PICOS 4.3.3.2 allow a remote attacker to cause a denial of service via a crafted BGP update with a corrupted attribute 23 (Tunnel Encapsulation).
- BDU:2023-05649
- ALSA-2023:5194
- ALSA-2023:5219
- DLA-3573-1
- DSA-5495-1
- openSUSE-SU-2024:13191-1
- RHSA-2023:5194
- RHSA-2023:5195
- RHSA-2023:5196
- RHSA-2023:5219
- RHSA-2023:5457
- RHSA-2023:5464
- RHSA-2023:5465
- SUSE-SU-2023:3709-1
- SUSE-SU-2023:3762-1
- SUSE-SU-2023:3793-1
- SUSE-SU-2023:3836-1
- SUSE-SU-2023:3839-1
- SUSE-SU-2024:4090-1
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for help- Published
- Aug 29, 2023
- Updated
- Jun 17, 2026
- EPSS
- 1.8% · 77th percentile
- CWE
- CWE-354
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 1.8%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| frrouting | frrouting | cpe:2.3:a:frrouting:frrouting |
| pica8 | picos | cpe:2.3:o:pica8:picos |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux10.0
- debian debian linux11.0
- debian debian linux12.0
- fedoraproject fedora37
- fedoraproject fedora38
- fedoraproject fedora39
- frrouting frrouting7.5.1 and later · up to 9.0 inclusive
- pica8 picos4.3.3.2
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | frr | before 7.5.1-7.el8_8.2.alma.1 | 7.5.1-7.el8_8.2.alma.1 |
| AlmaLinux:8 | frr-selinux | before 7.5.1-7.el8_8.2.alma.1 | 7.5.1-7.el8_8.2.alma.1 |
| AlmaLinux:9 | frr | before 8.3.1-5.el9_2.2.alma | 8.3.1-5.el9_2.2.alma |
| AlmaLinux:9 | frr-selinux | before 8.3.1-5.el9_2.2.alma | 8.3.1-5.el9_2.2.alma |
| Debian:10 | frr | before 7.5.1-1.1+deb10u1 | 7.5.1-1.1+deb10u1 |
| Debian:11 | frr | before 7.5.1-1.1+deb11u2 | 7.5.1-1.1+deb11u2 |
| Debian:12 | frr | before 8.4.4-1.1~deb12u1 | 8.4.4-1.1~deb12u1 |
| Debian:13 | frr | before 8.4.4-1.1 | 8.4.4-1.1 |
| openSUSE:Tumbleweed | frr | before 8.4-5.1 | 8.4-5.1 |
| Red Hat:enterprise_linux:8::appstream | frr | before 0:7.5.1-7.el8_8.2 | 0:7.5.1-7.el8_8.2 |
| Red Hat:enterprise_linux:8::appstream | frr-debuginfo | before 0:7.5.1-7.el8_8.2 | 0:7.5.1-7.el8_8.2 |
| Red Hat:enterprise_linux:8::appstream | frr-debugsource | before 0:7.5.1-7.el8_8.2 | 0:7.5.1-7.el8_8.2 |
| Red Hat:enterprise_linux:8::appstream | frr-selinux | before 0:7.5.1-7.el8_8.2 | 0:7.5.1-7.el8_8.2 |
| Red Hat:enterprise_linux:9::appstream | frr | before 0:8.3.1-5.el9_2.2 | 0:8.3.1-5.el9_2.2 |
| Red Hat:enterprise_linux:9::appstream | frr-debuginfo | before 0:8.3.1-5.el9_2.2 | 0:8.3.1-5.el9_2.2 |
| Red Hat:enterprise_linux:9::appstream | frr-debugsource | before 0:8.3.1-5.el9_2.2 | 0:8.3.1-5.el9_2.2 |
| Red Hat:enterprise_linux:9::appstream | frr-selinux | before 0:8.3.1-5.el9_2.2 | 0:8.3.1-5.el9_2.2 |
| Red Hat:rhel_aus:8.2::appstream | frr | before 0:7.0-5.el8_2.1 | 0:7.0-5.el8_2.1 |
| Red Hat:rhel_aus:8.2::appstream | frr-contrib | before 0:7.0-5.el8_2.1 | 0:7.0-5.el8_2.1 |
| Red Hat:rhel_aus:8.2::appstream | frr-debuginfo | before 0:7.0-5.el8_2.1 | 0:7.0-5.el8_2.1 |
| Red Hat:rhel_aus:8.2::appstream | frr-debugsource | before 0:7.0-5.el8_2.1 | 0:7.0-5.el8_2.1 |
| Red Hat:rhel_aus:8.4::appstream | frr | before 0:7.5-4.el8_4.4 | 0:7.5-4.el8_4.4 |
| Red Hat:rhel_aus:8.4::appstream | frr-debuginfo | before 0:7.5-4.el8_4.4 | 0:7.5-4.el8_4.4 |
| Red Hat:rhel_aus:8.4::appstream | frr-debugsource | before 0:7.5-4.el8_4.4 | 0:7.5-4.el8_4.4 |
+20
Same product
frrouting: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-38406bgpd/bgp_flowspec.c in FRRouting (FRR) before 8.4.3 mishandles an nlri length of zero, aka a "flowspec overflow."39Monitor
- CVE-2023-41361An issue was discovered in FRRouting FRR 9.0.39Monitor
- CVE-2022-37032An out-of-bounds read in the BGP daemon of FRRouting FRR before 8.4 may lead to a segmentation fault and denial of service.37Monitor
- CVE-2023-41360An issue was discovered in FRRouting FRR through 9.0.36Monitor
- CVE-2023-41359An issue was discovered in FRRouting FRR through 9.0.36Monitor
- CVE-2022-37035An issue was discovered in bgpd in FRRouting (FRR) 8.3.33Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:frr | 8.3.1-5.el9_2.2.alma · AlmaLinux:9 | Package registry (OSV) |
| almalinux:frr-selinux | 8.3.1-5.el9_2.2.alma · AlmaLinux:9 | Package registry (OSV) |
| debian:frr | 8.4.4-1.1~deb12u1 · Debian:12 | Package registry (OSV) |
| opensuse:frr | 8.4-150500.4.8.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:quagga | 1.1.1-150400.12.5.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| red hat:frr | 0:8.3.1-5.el9_2.2 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:frr-contrib | 0:7.0-5.el8_1.1 · Red Hat:rhel_e4s:8.1::appstream | Package registry (OSV) |
| red hat:frr-debuginfo | 0:8.3.1-5.el9_2.2 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:frr-debugsource | 0:8.3.1-5.el9_2.2 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:frr-selinux | 0:8.3.1-5.el9_2.2 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| suse:frr | 8.4-150500.4.8.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP5 | Package registry (OSV) |
| suse:quagga | 1.1.1-150400.12.5.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP4 | Package registry (OSV) |
| suse:quagga | 1.1.1-17.10.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-354 · Improper Validation of Integrity Check ValueCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.debian.org/debian-lts-announce/2023/09/msg00020.html
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JLG64IF3FU7V76K4TKCCXVNEE6P2VUDO/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LMJNX44SMJM25JZO7XWHDQCOB4SNJPIE/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WXR6PIVY4SWO7HDT4EY733H4X32SCPM4/
- news.ycombinator.com/item?id=37305800
- www.debian.org/security/2023/dsa-5495
Vendor advisories and official records. Exploit/PoC links are deliberately left out.