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Vulnerability details: VCID-qyke-2pcv-aaac
Vulnerability ID VCID-qyke-2pcv-aaac
Aliases CVE-2017-12837
Summary Heap-based buffer overflow in the S_regatom function in regcomp.c in Perl 5 before 5.24.3-RC1 and 5.26.x before 5.26.1-RC1 allows remote attackers to cause a denial of service (out-of-bounds write) via a regular expression with a '\N{}' escape and the case-insensitive modifier.
Status Published
Exploitability 0.5
Weighted Severity 7.0
Risk 3.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-122 Heap-based Buffer Overflow
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-12837.html
cvssv3 5.9 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-12837.json
epss 0.02065 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
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epss 0.02123 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
epss 0.02123 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
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epss 0.02228 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
epss 0.02228 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
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epss 0.02228 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
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epss 0.02581 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
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epss 0.02581 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
epss 0.02581 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
epss 0.02581 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
epss 0.02581 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
epss 0.02581 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
epss 0.02581 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
epss 0.02581 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
epss 0.02824 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
epss 0.02824 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
epss 0.05127 https://api.first.org/data/v1/epss?cve=CVE-2017-12837
rhbs low https://bugzilla.redhat.com/show_bug.cgi?id=1492091
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12837
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12883
cvssv2 1.9 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3 4 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2017-12837
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-12837
generic_textual Medium https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5
generic_textual Medium https://ubuntu.com/security/notices/USN-3478-1
cvssv3.1 9.8 https://www.oracle.com/security-alerts/cpujul2020.html
generic_textual CRITICAL https://www.oracle.com/security-alerts/cpujul2020.html
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-12837.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-12837.json
https://api.first.org/data/v1/epss?cve=CVE-2017-12837
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12837
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12883
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5
https://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1
https://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1
https://rt.perl.org/Public/Bug/Display.html?id=131582
https://security.netapp.com/advisory/ntap-20180426-0001/
https://ubuntu.com/security/notices/USN-3478-1
https://www.oracle.com/security-alerts/cpujul2020.html
http://www.debian.org/security/2017/dsa-3982
http://www.securityfocus.com/bid/100860
1492091 https://bugzilla.redhat.com/show_bug.cgi?id=1492091
875596 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=875596
cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:*
cpe:2.3:a:perl:perl:5.26.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:perl:perl:5.26.0:*:*:*:*:*:*:*
CVE-2017-12837 https://nvd.nist.gov/vuln/detail/CVE-2017-12837
USN-3478-1 https://usn.ubuntu.com/3478-1/
No exploits are available.
Vector: CVSS:3.0/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-2017-12837.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: AV:L/AC:M/Au:N/C:P/I:N/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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:N/UI:N/S:U/C:L/I:N/A:N 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:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-12837
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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-12837
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:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://www.oracle.com/security-alerts/cpujul2020.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

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.82338
EPSS Score 0.02065
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.