Sandstorm Cap'n Proto up to 0.4.1.0/0.5.1.0 Message integer underflow

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

A vulnerability classified as critical was found in Sandstorm Cap'n Proto up to 0.4.1.0/0.5.1.0. Affected by this vulnerability is some unknown processing. The manipulation as part of a Message leads to a integer underflow vulnerability. The CWE definition for the vulnerability is CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Integer underflow in Sandstorm Cap'n Proto before 0.4.1.1 and 0.5.x before 0.5.1.1 might allow remote peers to cause a denial of service or possibly obtain sensitive information from memory or execute arbitrary code via a crafted message.

The bug was discovered 03/17/2015. The weakness was shared 08/09/2017 (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2015-2311 since 03/17/2015. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 15 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 82514 (FreeBSD : Several vulnerabilities found in PHP (742563d4-d776-11e4-b595-4061861086c1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l.

Upgrading to version 0.4.1.1 or 0.5.1.1 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (82514).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Integer underflow
CWE: CWE-191 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 82514
Nessus Name: FreeBSD : Several vulnerabilities found in PHP (742563d4-d776-11e4-b595-4061861086c1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Cap'n Proto 0.4.1.1/0.5.1.1
Patch: github.com

Timelineinfo

03/17/2015 🔍
03/17/2015 +0 days 🔍
04/01/2015 +15 days 🔍
04/02/2015 +1 days 🔍
08/09/2017 +860 days 🔍
08/09/2017 +0 days 🔍
08/10/2017 +1 days 🔍
12/15/2022 +1953 days 🔍

Sourcesinfo

Advisory: 26bcceda72372211063d62aab7e45665faa83633
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-2311 (🔍)

Entryinfo

Created: 08/10/2017 08:29
Updated: 12/15/2022 14:40
Changes: 08/10/2017 08:29 (67), 11/05/2019 17:19 (2), 12/15/2022 14:40 (5)
Complete: 🔍
Cache ID: 3:092:103

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