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Vulnerability details: VCID-6wqn-x88m-a3hx
Vulnerability ID VCID-6wqn-x88m-a3hx
Aliases CVE-2024-6197
Summary libcurl's ASN1 parser has this utf8asn1str() function used for parsing an ASN.1 UTF-8 string. Itcan detect an invalid field and return error. Unfortunately, when doing so it also invokes `free()` on a 4 byte localstack buffer. Most modern malloc implementations detect this error and immediately abort. Some however accept the input pointer and add that memory to its list of available chunks. This leads to the overwriting of nearby stack memory. The content of the overwrite is decided by the `free()` implementation; likely to be memory pointers and a set of flags. The most likely outcome of exploting this flaw is a crash, although it cannot be ruled out that more serious results can be had in special circumstances.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-590 Free of Memory not on the Heap
System Score Found at
cvssv3 5.9 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2024-6197.json
epss 0.01154 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.01154 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.01154 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.01154 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.01154 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.01154 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.01154 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.01253 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.01253 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.01253 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.01278 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.01278 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.01278 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.03371 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.03371 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.03371 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.03371 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.03371 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.03371 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.03371 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.03371 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.03371 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.03371 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
epss 0.03371 https://api.first.org/data/v1/epss?cve=CVE-2024-6197
cvssv3.1 7.5 https://curl.se/docs/CVE-2024-6197.html
cvssv3.1 Medium https://curl.se/docs/CVE-2024-6197.html
ssvc Track https://curl.se/docs/CVE-2024-6197.html
cvssv3.1 7.5 https://curl.se/docs/CVE-2024-6197.json
ssvc Track https://curl.se/docs/CVE-2024-6197.json
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 7.5 https://hackerone.com/reports/2559516
ssvc Track https://hackerone.com/reports/2559516
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2024-6197
cvssv3.1 7.5 http://www.openwall.com/lists/oss-security/2024/07/24/1
ssvc Track http://www.openwall.com/lists/oss-security/2024/07/24/1
cvssv3.1 7.5 http://www.openwall.com/lists/oss-security/2024/07/24/5
ssvc Track http://www.openwall.com/lists/oss-security/2024/07/24/5
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2024-6197.json
https://api.first.org/data/v1/epss?cve=CVE-2024-6197
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://security.netapp.com/advisory/ntap-20241129-0008/
1 http://www.openwall.com/lists/oss-security/2024/07/24/1
1076996 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1076996
2299653 https://bugzilla.redhat.com/show_bug.cgi?id=2299653
2559516 https://hackerone.com/reports/2559516
5 http://www.openwall.com/lists/oss-security/2024/07/24/5
cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*
CVE-2024-6197 https://nvd.nist.gov/vuln/detail/CVE-2024-6197
CVE-2024-6197.html https://curl.se/docs/CVE-2024-6197.html
CVE-2024-6197.json https://curl.se/docs/CVE-2024-6197.json
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2024-6197.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

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://curl.se/docs/CVE-2024-6197.html
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

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Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-24T18:42:30Z/ Found at https://curl.se/docs/CVE-2024-6197.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://curl.se/docs/CVE-2024-6197.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

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none

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required

unchanged

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Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-24T18:42:30Z/ Found at https://curl.se/docs/CVE-2024-6197.json
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/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

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required

unchanged

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://hackerone.com/reports/2559516
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

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none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-24T18:42:30Z/ Found at https://hackerone.com/reports/2559516
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2024-6197
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

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required

unchanged

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at http://www.openwall.com/lists/oss-security/2024/07/24/1
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

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high

low

none

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low

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Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-24T18:42:30Z/ Found at http://www.openwall.com/lists/oss-security/2024/07/24/1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at http://www.openwall.com/lists/oss-security/2024/07/24/5
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:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-24T18:42:30Z/ Found at http://www.openwall.com/lists/oss-security/2024/07/24/5
Exploit Prediction Scoring System (EPSS)
Percentile 0.7776
EPSS Score 0.01154
Published At Sept. 12, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:42:42.396748+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.17/main.json 37.0.0