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Vulnerability details: VCID-weku-6nwy-aaan
Vulnerability ID VCID-weku-6nwy-aaan
Aliases CVE-2019-11072
Summary ** DISPUTED ** lighttpd before 1.4.54 has a signed integer overflow, which might allow remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a malicious HTTP GET request, as demonstrated by mishandling of /%2F? in burl_normalize_2F_to_slash_fix in burl.c. NOTE: The developer states "The feature which can be abused to cause the crash is a new feature in lighttpd 1.4.50, and is not enabled by default. It must be explicitly configured in the config file (e.g. lighttpd.conf). Certain input will trigger an abort() in lighttpd when that feature is enabled. lighttpd detects the underflow or realloc() will fail (in both 32-bit and 64-bit executables), also detected in lighttpd. Either triggers an explicit abort() by lighttpd. This is not exploitable beyond triggering the explicit abort() with subsequent application exit."
Status Disputed
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (1)
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-11072.html
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epss 0.04795 https://api.first.org/data/v1/epss?cve=CVE-2019-11072
epss 0.05023 https://api.first.org/data/v1/epss?cve=CVE-2019-11072
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epss 0.36847 https://api.first.org/data/v1/epss?cve=CVE-2019-11072
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epss 0.66289 https://api.first.org/data/v1/epss?cve=CVE-2019-11072
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epss 0.66289 https://api.first.org/data/v1/epss?cve=CVE-2019-11072
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11072
generic_textual Medium https://github.com/lighttpd/lighttpd1.4/commit/32120d5b8b3203fc21ccb9eafb0eaf824bb59354
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2019-11072
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2019-11072
generic_textual Medium https://redmine.lighttpd.net/issues/2945
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2019-11072
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:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2019-11072
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 0.77882
EPSS Score 0.01217
Published At April 16, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-04-17T13:01:42.627502+00:00 NVD CVE Status Improver Improve https://cveawg.mitre.org/api/cve/CVE-2019-11072 36.0.0