CVE-2015-8618 : The Int.Exp Montgomery code in the math/big library in Go 1.5.x before 1.5.3 mis

The Int.Exp Montgomery code in the math/big library in Go 1.5.x before 1.5.3 mishandles carry propagation and produces incorrect output, which makes it easier for attackers to obtain private RSA keys via unspecified vectors.

Published 2016-01-27 20:59:00

Updated 2025-04-12 10:46:41

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2015-8618

Opensuse » Leap » Version: 42.1
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
Matching versions
Golang » GO » Version: 1.5.1
cpe:2.3:a:golang:go:1.5.1:*:*:*:*:*:*:*
Matching versions
Golang » GO » Version: 1.5
cpe:2.3:a:golang:go:1.5:*:*:*:*:*:*:*
Matching versions
Golang » GO » Version: 1.5.2
cpe:2.3:a:golang:go:1.5.2:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2015-8618

EPSS FAQ

0.99%

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

~ 75 %

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

CVSS scores for CVE-2015-8618

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:P/I:N/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
7.5	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: None

CWE ids for CVE-2015-8618

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2015-8618

http://lists.opensuse.org/opensuse-updates/2016-05/msg00077.html

openSUSE-SU-2016:1331-1: moderate: Security update for go

CVEs referencing this url
https://go-review.googlesource.com/#/c/17672/
https://github.com/golang/go/issues/13515

math/big: incorrect result from Exp on 386 architecture · Issue #13515 · golang/go · GitHub
Patch
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176179.html

[SECURITY] Fedora 22 Update: golang-1.5.3-1.fc22
http://www.openwall.com/lists/oss-security/2016/01/13/7

oss-security - [security] Go security release v1.5.3
http://www.openwall.com/lists/oss-security/2015/12/21/6

oss-security - CVE request for math/big.Exp
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175642.html

[SECURITY] Fedora 23 Update: golang-1.5.3-1.fc23
https://groups.google.com/forum/#!topic/golang-announce/MEATuOi_ei4

[security] Go 1.5.3 is released - Google Groepen
https://groups.google.com/forum/#%21topic/golang-announce/MEATuOi_ei4
http://www.openwall.com/lists/oss-security/2015/12/22/9

oss-security - Re: CVE request for math/big.Exp

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Vulnerability Details : CVE-2015-8618

Products affected by CVE-2015-8618

Exploit prediction scoring system (EPSS) score for CVE-2015-8618

CVSS scores for CVE-2015-8618

CWE ids for CVE-2015-8618

References for CVE-2015-8618