Search for vulnerabilities
Vulnerability details: VCID-dw2d-6fkr-87g2
Vulnerability ID VCID-dw2d-6fkr-87g2
Aliases CVE-2023-28320
Summary A denial of service vulnerability exists in curl <v8.1.0 in the way libcurl provides several different backends for resolving host names, selected at build time. If it is built to use the synchronous resolver, it allows name resolves to time-out slow operations using `alarm()` and `siglongjmp()`. When doing this, libcurl used a global buffer that was not mutex protected and a multi-threaded application might therefore crash or otherwise misbehave.
Status Published
Exploitability 0.5
Weighted Severity 5.3
Risk 2.6
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-662 Improper Synchronization
CWE-400 Uncontrolled Resource Consumption
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
System Score Found at
cvssv3 3.7 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-28320.json
epss 0.00209 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00209 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00209 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00641 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
epss 0.00659 https://api.first.org/data/v1/epss?cve=CVE-2023-28320
cvssv3.1 Low https://curl.se/docs/CVE-2023-28320.html
cvssv3.1 5.9 http://seclists.org/fulldisclosure/2023/Jul/47
ssvc Track http://seclists.org/fulldisclosure/2023/Jul/47
cvssv3.1 5.9 http://seclists.org/fulldisclosure/2023/Jul/48
ssvc Track http://seclists.org/fulldisclosure/2023/Jul/48
cvssv3.1 5.9 http://seclists.org/fulldisclosure/2023/Jul/52
ssvc Track http://seclists.org/fulldisclosure/2023/Jul/52
cvssv3.1 3.7 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 5.9 https://hackerone.com/reports/1929597
ssvc Track https://hackerone.com/reports/1929597
cvssv3.1 5.9 https://nvd.nist.gov/vuln/detail/CVE-2023-28320
cvssv3.1 5.9 https://security.gentoo.org/glsa/202310-12
ssvc Track https://security.gentoo.org/glsa/202310-12
cvssv3.1 5.9 https://security.netapp.com/advisory/ntap-20230609-0009/
ssvc Track https://security.netapp.com/advisory/ntap-20230609-0009/
cvssv3.1 5.9 https://support.apple.com/kb/HT213843
ssvc Track https://support.apple.com/kb/HT213843
cvssv3.1 5.9 https://support.apple.com/kb/HT213844
ssvc Track https://support.apple.com/kb/HT213844
cvssv3.1 5.9 https://support.apple.com/kb/HT213845
ssvc Track https://support.apple.com/kb/HT213845
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-28320.json
https://api.first.org/data/v1/epss?cve=CVE-2023-28320
https://curl.se/docs/CVE-2023-28320.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-28320
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://hackerone.com/reports/1929597
1036239 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1036239
202310-12 https://security.gentoo.org/glsa/202310-12
2196783 https://bugzilla.redhat.com/show_bug.cgi?id=2196783
47 http://seclists.org/fulldisclosure/2023/Jul/47
48 http://seclists.org/fulldisclosure/2023/Jul/48
52 http://seclists.org/fulldisclosure/2023/Jul/52
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:ontap_antivirus_connector:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:ontap_antivirus_connector:-:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
CVE-2023-28320 https://nvd.nist.gov/vuln/detail/CVE-2023-28320
HT213843 https://support.apple.com/kb/HT213843
HT213844 https://support.apple.com/kb/HT213844
HT213845 https://support.apple.com/kb/HT213845
ntap-20230609-0009 https://security.netapp.com/advisory/ntap-20230609-0009/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-28320.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:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at http://seclists.org/fulldisclosure/2023/Jul/47
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-01-15T15:57:47Z/ Found at http://seclists.org/fulldisclosure/2023/Jul/47
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at http://seclists.org/fulldisclosure/2023/Jul/48
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-01-15T15:57:47Z/ Found at http://seclists.org/fulldisclosure/2023/Jul/48
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at http://seclists.org/fulldisclosure/2023/Jul/52
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-01-15T15:57:47Z/ Found at http://seclists.org/fulldisclosure/2023/Jul/52
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/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: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://hackerone.com/reports/1929597
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-01-15T15:57:47Z/ Found at https://hackerone.com/reports/1929597
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2023-28320
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:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://security.gentoo.org/glsa/202310-12
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-01-15T15:57:47Z/ Found at https://security.gentoo.org/glsa/202310-12
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://security.netapp.com/advisory/ntap-20230609-0009/
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-01-15T15:57:47Z/ Found at https://security.netapp.com/advisory/ntap-20230609-0009/
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://support.apple.com/kb/HT213843
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-01-15T15:57:47Z/ Found at https://support.apple.com/kb/HT213843
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://support.apple.com/kb/HT213844
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-01-15T15:57:47Z/ Found at https://support.apple.com/kb/HT213844
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://support.apple.com/kb/HT213845
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: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2025-01-15T15:57:47Z/ Found at https://support.apple.com/kb/HT213845
Exploit Prediction Scoring System (EPSS)
Percentile 0.43629
EPSS Score 0.00209
Published At Aug. 1, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:35:22.784037+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.18/main.json 37.0.0