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Vulnerability Details :

CVE-2024-13939

Summary
Assigner-CPANSec
Assigner Org ID-9b29abf9-4ab0-4765-b253-1875cd9b441e
Published At-28 Mar, 2025 | 02:05
Updated At-28 Mar, 2025 | 14:08
Rejected At-
Credits

String::Compare::ConstantTime for Perl through 0.321 is vulnerable to timing attacks that allow an attacker to guess the length of a secret string

String::Compare::ConstantTime for Perl through 0.321 is vulnerable to timing attacks that allow an attacker to guess the length of a secret string. As stated in the documentation: "If the lengths of the strings are different, because equals returns false right away the size of the secret string may be leaked (but not its contents)." This is similar to CVE-2020-36829

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:CPANSec
Assigner Org ID:9b29abf9-4ab0-4765-b253-1875cd9b441e
Published At:28 Mar, 2025 | 02:05
Updated At:28 Mar, 2025 | 14:08
Rejected At:
▼CVE Numbering Authority (CNA)
String::Compare::ConstantTime for Perl through 0.321 is vulnerable to timing attacks that allow an attacker to guess the length of a secret string

String::Compare::ConstantTime for Perl through 0.321 is vulnerable to timing attacks that allow an attacker to guess the length of a secret string. As stated in the documentation: "If the lengths of the strings are different, because equals returns false right away the size of the secret string may be leaked (but not its contents)." This is similar to CVE-2020-36829

Affected Products
Vendor
FRACTAL
Product
String::Compare::ConstantTime
Collection URL
https://cpan.org/modules
Package Name
String-Compare-ConstantTime
Repo
https://github.com/hoytech/String-Compare-ConstantTime
Program Files
  • ConstantTime.xs
Program Routines
  • equals()
Default Status
unaffected
Versions
Affected
  • From 0 through 0.321 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-208CWE-208 Observable Timing Discrepancy
Type: CWE
CWE ID: CWE-208
Description: CWE-208 Observable Timing Discrepancy
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

reporter
Robert Rothenberg
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://metacpan.org/release/FRACTAL/String-Compare-ConstantTime-0.321/view/lib/String/Compare/ConstantTime.pm#TIMING-SIDE-CHANNEL
related
Hyperlink: https://metacpan.org/release/FRACTAL/String-Compare-ConstantTime-0.321/view/lib/String/Compare/ConstantTime.pm#TIMING-SIDE-CHANNEL
Resource:
related
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:9b29abf9-4ab0-4765-b253-1875cd9b441e
Published At:28 Mar, 2025 | 03:15
Updated At:11 Apr, 2025 | 18:10

String::Compare::ConstantTime for Perl through 0.321 is vulnerable to timing attacks that allow an attacker to guess the length of a secret string. As stated in the documentation: "If the lengths of the strings are different, because equals returns false right away the size of the secret string may be leaked (but not its contents)." This is similar to CVE-2020-36829

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Type: Secondary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CPE Matches

fractal
fractal
>>string\>>\
cpe:2.3:a:fractal:string\:\:compare\:\:constanttime:*:*:*:*:*:perl:*:*
Weaknesses
CWE IDTypeSource
CWE-208Secondary9b29abf9-4ab0-4765-b253-1875cd9b441e
CWE-203Primarynvd@nist.gov
CWE ID: CWE-208
Type: Secondary
Source: 9b29abf9-4ab0-4765-b253-1875cd9b441e
CWE ID: CWE-203
Type: Primary
Source: nvd@nist.gov
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://metacpan.org/release/FRACTAL/String-Compare-ConstantTime-0.321/view/lib/String/Compare/ConstantTime.pm#TIMING-SIDE-CHANNEL9b29abf9-4ab0-4765-b253-1875cd9b441e
Technical Description
Hyperlink: https://metacpan.org/release/FRACTAL/String-Compare-ConstantTime-0.321/view/lib/String/Compare/ConstantTime.pm#TIMING-SIDE-CHANNEL
Source: 9b29abf9-4ab0-4765-b253-1875cd9b441e
Resource:
Technical Description

Change History

0
Information is not available yet

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