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Vulnerability details: VCID-q2hu-qb4s-ykfw
Vulnerability ID VCID-q2hu-qb4s-ykfw
Aliases CVE-2018-18309
Summary An issue was discovered in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31. An invalid memory address dereference was discovered in read_reloc in reloc.c. The vulnerability causes a segmentation fault and application crash, which leads to denial of service, as demonstrated by objdump, because of missing _bfd_clear_contents bounds checking.
Status Published
Exploitability 0.5
Weighted Severity 5.0
Risk 2.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
System Score Found at
cvssv3 3.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-18309.json
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00309 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00315 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00428 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00428 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00428 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00428 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00428 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
epss 0.00445 https://api.first.org/data/v1/epss?cve=CVE-2018-18309
cvssv3 3.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2018-18309
cvssv3 5.5 https://nvd.nist.gov/vuln/detail/CVE-2018-18309
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-18309.json
https://api.first.org/data/v1/epss?cve=CVE-2018-18309
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18309
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://sourceware.org/bugzilla/show_bug.cgi?id=23770
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git%3Bh=0930cb3021b8078b34cf216e79eb8608d017864f
http://www.securityfocus.com/bid/105692
1639911 https://bugzilla.redhat.com/show_bug.cgi?id=1639911
cpe:2.3:a:gnu:binutils:2.31:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:gnu:binutils:2.31:*:*:*:*:*:*:*
CVE-2018-18309 https://nvd.nist.gov/vuln/detail/CVE-2018-18309
USN-4336-1 https://usn.ubuntu.com/4336-1/
USN-4336-2 https://usn.ubuntu.com/4336-2/
No exploits are available.
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-18309.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-18309
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-18309
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.43361
EPSS Score 0.00206
Published At Aug. 1, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:37:42.516502+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/4336-1/ 37.0.0