CVE-2018-6323

Exp

The elf_object_p function in elfcode.h in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.29.1, has an unsigned integer overflow because bfd_size_type multiplication is not used. A crafted ELF file allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact.

Published: 2018-01-26 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-6323 is rated High Exploit Risk (78.4/100): CVSS High severity, with high exploitation likelihood (EPSS 5.83%, 92th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-6323

EDB-ID Source Kind Published Link
44035 exploit_db edb 2018-02-14 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-6323

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-07-07 5.94% 5.83% -0.11%
2 2026-06-15 1.02% 5.94% +4.92%
3 2026-04-13 — 1.02% —

Full EPSS history (21 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-6323

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.0 HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2018-6323

OS Trackers for CVE-2018-6323

vendor priority summary link
debian not yet assigned CVE-2018-6323 not yet assigned priority: Debian including 1 source packages (binutils), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-6323
redhat low — https://access.redhat.com/security/cve/CVE-2018-6323
suse low CVE-2018-6323 severity low: SUSE including 386 source package names (0.23.1-12.3:binutils-2.32-7.5.1, 0.3.2-1.2:binutils-2.32-7.5.1, …), 803 product×package rows across 324 product lines (Container bci/bci-sle15-kernel-module-devel, Container bci/gcc, … (324 product lines)): Fixed 547, Known Affected 231, Known Not Affected 25. https://www.suse.com/security/cve/CVE-2018-6323/
ubuntu low CVE-2018-6323 low priority: Ubuntu including 1 source packages (binutils), 15 status rows across 15 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, trusty, upstream, xenial): not-affected 11, released 3, ignored 1. https://ubuntu.com/security/CVE-2018-6323

Affected software / configurations for CVE-2018-6323

Vendor Product Version Raw CPE
gnu binutils 2.29.1 cpe:2.3:a:gnu:binutils:2.29.1:*:*:*:*:*:*:*

References for CVE-2018-6323

cvelogic Threat Intelligence