Service interruption via unbounded color parsing regex
Published Dec 31, 2022 · Updated Aug 5, 2024
Regular expression denial of service in Christian Bromann rgb2hex before 0.1.6 allows remote attackers to interrupt services via crafted color strings. The exported rgb2hex function removes whitespace and runs an unanchored input-parsing expression whose adjacent optional numeric groups permit excessive backtracking on malformed RGBA input. Impact requires an application to pass attacker-controlled color text into the library and is limited to CPU exhaustion that hangs or stalls the hosting process.
Summary
What happened
Regular expression denial of service in Christian Bromann rgb2hex before 0.1.6 allows remote attackers to interrupt services via crafted color strings. The exported rgb2hex function removes whitespace and runs an unanchored input-parsing expression whose adjacent optional numeric groups permit excessive backtracking on malformed RGBA input. Impact requires an application to pass attacker-controlled color text into the library and is limited to CPU exhaustion that hangs or stalls the hosting process.
The record
- CVE
- CVE-2018-25061
- Published
- Dec 31, 2022
- Updated
- Aug 5, 2024
- Vendor
- Christian Bromann
- Product
- rgb2hex
- Classifications
- CWE-1333, T1499.004
- Attack vector
- network
- Privileges
- Unavailable
Timeline
How it unfolded
- Dec 31, 2022CVE publishedPublication date reported by the CVE source.
- Aug 5, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.1.0
- Affected versionversion=0.1.1
- Affected versionversion=0.1.2
- Affected versionversion=0.1.3
- Affected versionversion=0.1.4
- Affected versionversion=0.1.5
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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