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CVE-2024-34403

19
FAUCET Score

CVE-2024-34403 is an integer overflow vulnerability in uriparser versions through 0.9.7, specifically within the ComposeQueryMallocExMm function in UriQuery.c, affecting products like Fedora and uriparser_project. Rated as Medium severity (CVSS 5.9), it has a network attack vector and high attack complexity, potentially leading to a denial of service. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant media coverage, though it has received some community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9.7CPE matchmatch criteria
cpe:2.3:a:uriparser_project:uriparser:*:*:*:*:*:*:*:*
38CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
39CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
40CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.32%
Probability of exploitation in next 30 days
EPSS Percentile
67.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0132 is in the 37th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 17691-17084Fixed in: 0.9.8-3
microsoftpatch availablevia msrc
Product: azl3 uriparser 0.9.8-3 on Azure Linux 3.0Fixed in: 0.9.8-3

Vendor Advisories (2)

microsoft2024-May/CVE-2024-34403Moderate

An issue was discovered in uriparser through 0.9.7. ComposeQueryMallocExMm in UriQuery.c has an integer overflow via a long string.

May 14, 2024
redhatCVE-2024-34403Moderate

uriparser: integer overflow via a long string in ComposeQueryMallocExMm() in UriQuery.c

May 3, 2024

References

lists.fedoraproject.org / archives/list/[email protected]/message/5R36L762D3KX3GA66OOPWW7M7KKDRXDP
lists.fedoraproject.org / archives/list/[email protected]/message/CZ6KEUQXWCTYXGTBMZDD7CHJCYI52XY3
github.com / uriparser/uriparser/issues/183
Issue TrackingVendor Advisory
github.com / uriparser/uriparser/pull/186
Issue TrackingPatchVendor Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/5R36L762D3KX3GA66OOPWW7M7KKDRXDP
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/CZ6KEUQXWCTYXGTBMZDD7CHJCYI52XY3
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/UG4J7PD475LSCGCSHFU4GMU4TWLDSNW2
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2024/05/06/1
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2024/05/06/3
Mailing ListThird Party Advisory