CVE-2018-5381: canonical ubuntu_linux
CVSS: 7.5v3.0HighModified
AliasesUBUNTU-CVE-2018-5381
Published 19-02-2018Last modified 16-09-2024
Vulnerability summary
CVE-2018-5381 is a high (CVSS 7.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 30.16% chance of exploitation in the next 30 days, higher than 98.2% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.0 (NVD)EPSS score
30.16%
0%100%
High · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 9 · Duplicates 1 · Related 6Timeline
- 19-02-2018PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
The Quagga BGP daemon (bgpd) prior to version 1.2.3 has a bug in its parsing of "Capabilities" in BGP OPEN messages, in the bgp_packet.c:bgp_capability_msg_parse function. The parser can enter an infinite loop on invalid capabilities if a Multi-Protocol capability does not have a recognized AFI/SAFI, causing a denial of service.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSources3 sources · 6.5–7.5
- CVE.orgCNA6.5MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
30.16%
Chance of exploitation in the next 30 days
Percentile
98%
Versus all other CVEs
30-day change
0.00 pp
From 30.16% on 18-09-2026
18-09-202618-10-2026
EPSS score30.16%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-228Improper Handling of Syntactically Invalid StructureThe product does not handle or incorrectly handles input that is not syntactically well-formed with respect to the associated specification.
- CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
Affected systems
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 17.10
Debian1 product
- debian_linuxEOL7.0 | 8.0 | 9.0
Siemens1 product
- ruggedcom_rox_ii_firmware< 2.13.0
Ubuntu1 product
- quagga< 0.99.22.4-3ubuntu1.5 | < 0.99.24.1-2ubuntu1.4
5 vendors · 6 products
References
12 links- gogs.quagga.net/Quagga/quagga/src/master/doc/security/Quagga-2018-1975.txtX Refsource CONFIRMVendor Advisory
- lists.debian.org/debian-lts-announce/2018/02/msg00021.htmlMailing ListX Refsource MLISTThird Party Advisory
- cert-portal.siemens.com/productcert/pdf/ssa-451142.pdfX Refsource CONFIRMMitigationThird Party Advisory