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CVE-2016-15059— Net::IDN::Punycode versions before 2.301 for Perl allow a heap buffer overflow via unchecked writes past the output buffer in encode_punycode

Quick assessment

Affected
CVE-2016-15059
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Net::IDN::Punycode versions before 2.301 for Perl allow a heap buffer overflow via unchecked writes past the output buffer in encode_punycode. The XS backend builds the encoded label in the string buffer of the scalar it returns, sized from the input length. T

EPSS 0.17% · P7

Affected Version Matrix 1

VendorProduct Version RangeStatus
None None < 2.301 affected

I. Basic Information for CVE-2016-15059

Vulnerability Information

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Vulnerability Title
Net::IDN::Punycode versions before 2.301 for Perl allow a heap buffer overflow via unchecked writes past the output buffer in encode_punycode
Source: CVE Program / CVE List V5
Vulnerability Description
Net::IDN::Punycode versions before 2.301 for Perl allow a heap buffer overflow via unchecked writes past the output buffer in encode_punycode. The XS backend builds the encoded label in the string buffer of the scalar it returns, sized from the input length. The loop that emits the digits of each code point checks for room before every write, but the write of the last digit of each round and the write of the terminating NUL do not, so an input whose encoded form fills the buffer writes past its end. Only the XS backend is affected. Encoding an attacker-supplied string corrupts the heap.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- - 0 ~ 2.301 -

II. Public POCs for CVE-2016-15059

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III. Intelligence Information for CVE-2016-15059

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Patches & Fixes for CVE-2016-15059 (1)

Other References for CVE-2016-15059 (1)

Other References for CVE-2016-15059 (1)

IV. Related Vulnerabilities

Same weakness: CWE-122

V. Comments for CVE-2016-15059

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