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cveMitreCVE-2018-18520
HistoryOct 19, 2018 - 5:29 p.m.

CVE-2018-18520

2018-10-1917:29:00
CWE-119
mitre
web.nvd.nist.gov
204
cve-2018-18520
nvd
invalid memory address
libelf
elfutils
eu-size
ar files
denial of service
application crash
crafted elf file

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

AI Score

6.7

Confidence

High

EPSS

0.003

Percentile

68.7%

An Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174. Although eu-size is intended to support ar files inside ar files, handle_ar in size.c closes the outer ar file before handling all inner entries. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file.

Affected configurations

Nvd
Node
elfutils_projectelfutilsRangeโ‰ค0.174
Node
debiandebian_linuxMatch8.0
OR
debiandebian_linuxMatch9.0
Node
canonicalubuntu_linuxMatch16.04esm
OR
canonicalubuntu_linuxMatch18.04lts
OR
canonicalubuntu_linuxMatch18.10
Node
opensuseleapMatch15.0
OR
opensuseleapMatch15.1
Node
redhatenterprise_linux_desktopMatch7.0
OR
redhatenterprise_linux_serverMatch7.0
OR
redhatenterprise_linux_workstationMatch7.0
VendorProductVersionCPE
elfutils_projectelfutils*cpe:2.3:a:elfutils_project:elfutils:*:*:*:*:*:*:*:*
debiandebian_linux8.0cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debiandebian_linux9.0cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
canonicalubuntu_linux16.04cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
canonicalubuntu_linux18.04cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonicalubuntu_linux18.10cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
opensuseleap15.0cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
opensuseleap15.1cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
redhatenterprise_linux_desktop7.0cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
redhatenterprise_linux_server7.0cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
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CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

AI Score

6.7

Confidence

High

EPSS

0.003

Percentile

68.7%