CVE-2018-13347 : mpatch.c in Mercurial before 4.6.1 mishandles integer addition and subtraction,

mpatch.c in Mercurial before 4.6.1 mishandles integer addition and subtraction, aka OVE-20180430-0002.

Published 2018-07-06 00:29:00

Updated 2020-07-31 13:15:12

Source MITRE

View at NVD, CVE.org

Vulnerability category: Overflow

Products affected by CVE-2018-13347

Mercurial » Mercurial
Versions before (<) 4.6.1
cpe:2.3:a:mercurial:mercurial:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.45%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 62 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Assigned by: nvd@nist.gov (Primary)

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