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Vulnerability details: VCID-qsmb-2g7v-aaar
Vulnerability ID VCID-qsmb-2g7v-aaar
Aliases CVE-2021-27216
Summary Exim 4 before 4.94.2 has Execution with Unnecessary Privileges. By leveraging a delete_pid_file race condition, a local user can delete arbitrary files as root. This involves the -oP and -oPX options.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-27216.html
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generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27216
cvssv2 6.3 https://nvd.nist.gov/vuln/detail/CVE-2021-27216
cvssv3 6.3 https://nvd.nist.gov/vuln/detail/CVE-2021-27216
cvssv3.1 6.3 https://nvd.nist.gov/vuln/detail/CVE-2021-27216
generic_textual Medium https://ubuntu.com/security/notices/USN-4934-1
generic_textual Medium https://ubuntu.com/security/notices/USN-4934-2
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-27216.html
https://api.first.org/data/v1/epss?cve=CVE-2021-27216
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27216
https://ubuntu.com/security/notices/USN-4934-1
https://ubuntu.com/security/notices/USN-4934-2
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28007-LFDIR.txt
cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*
CVE-2021-27216 https://nvd.nist.gov/vuln/detail/CVE-2021-27216
GLSA-202105-01 https://security.gentoo.org/glsa/202105-01
USN-4934-1 https://usn.ubuntu.com/4934-1/
USN-4934-2 https://usn.ubuntu.com/4934-2/
No exploits are available.
Vector: AV:L/AC:M/Au:N/C:N/I:C/A:C Found at https://nvd.nist.gov/vuln/detail/CVE-2021-27216
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:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-27216
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:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-27216
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.