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Vulnerability details: VCID-xgvn-7emk-aaaj
Vulnerability ID VCID-xgvn-7emk-aaaj
Aliases CVE-2018-7738
Summary In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands in a mountpoint name, which is mishandled during a umount command (within Bash) by a different user, as demonstrated by logging in as root and entering umount followed by a tab character for autocompletion.
Status Published
Exploitability 0.5
Weighted Severity 7.0
Risk 3.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
System Score Found at
generic_textual Negligible http://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-7738.html
cvssv3 6.7 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-7738.json
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rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1552641
generic_textual Negligible https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7738
cvssv3 8.2 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.2 https://nvd.nist.gov/vuln/detail/CVE-2018-7738
cvssv3 7.8 https://nvd.nist.gov/vuln/detail/CVE-2018-7738
generic_textual Negligible https://ubuntu.com/security/notices/USN-4512-1
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-7738.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-7738.json
https://api.first.org/data/v1/epss?cve=CVE-2018-7738
https://bugs.debian.org/892179
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7738
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55
https://github.com/karelzak/util-linux/issues/539
https://security.netapp.com/advisory/ntap-20241213-0002/
https://ubuntu.com/security/notices/USN-4512-1
https://usn.ubuntu.com/4512-1/
https://www.debian.org/security/2018/dsa-4134
http://www.securityfocus.com/bid/103367
1552641 https://bugzilla.redhat.com/show_bug.cgi?id=1552641
892179 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892179
cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:*
CVE-2018-7738 https://nvd.nist.gov/vuln/detail/CVE-2018-7738
GLSA-201803-02 https://security.gentoo.org/glsa/201803-02
No exploits are available.
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-7738.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:L/UI:R/S:C/C:H/I:H/A:H 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:L/AC:L/Au:N/C:C/I:C/A:C Found at https://nvd.nist.gov/vuln/detail/CVE-2018-7738
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:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-7738
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 0.05128
EPSS Score 0.00042
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.