Sandstorm Cap'n Proto up to 0.5.3.0 Compiler Optimization input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Sandstorm Cap'n Proto up to 0.5.3.0. This affects an unknown function of the component Compiler Optimization. Such manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2017-7892. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Sandstorm Cap'n Proto up to 0.5.3.0 and classified as problematic. Affected by this issue is an unknown function of the component Compiler Optimization. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

Sandstorm Cap'n Proto before 0.5.3.1 allows remote crashes related to a compiler optimization. A remote attacker can trigger a segfault in a 32-bit libcapnp application because Cap'n Proto relies on pointer arithmetic calculations that overflow. An example compiler with optimization that elides a bounds check in such calculations is Apple LLVM version 8.1.0 (clang-802.0.41). The attack vector is a crafted far pointer within a message.

The bug was discovered 04/17/2017. The weakness was disclosed 04/17/2017 (GitHub Repository). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2017-7892 since 04/17/2017. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 101570 (Fedora 26 : capnproto (2017-0be0f172f8)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277662 (Fedora Security Update for capnproto (FEDORA-2017-2b328c7ce9)).

Upgrading to version 0.5.3.1 eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (101570). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 101570
Nessus Name: Fedora 26 : capnproto (2017-0be0f172f8)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for capnproto FEDORA-2017-adc3d69650
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Cap'n Proto 0.5.3.1

Timelineinfo

04/17/2017 🔍
04/17/2017 +0 days 🔍
04/17/2017 +0 days 🔍
04/17/2017 +0 days 🔍
04/18/2017 +1 days 🔍
06/17/2017 +60 days 🔍
07/17/2017 +30 days 🔍
11/29/2022 +1961 days 🔍

Sourcesinfo

Advisory: FEDORA-2017-0be0f172f8
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-7892 (🔍)
GCVE (CVE): GCVE-0-2017-7892
GCVE (VulDB): GCVE-100-99932
OSVDB: - CVE-2017-7892 - Sandstorm - Cap'n Proto - Integer Overflow Issue

Entryinfo

Created: 04/18/2017 10:37
Updated: 11/29/2022 15:00
Changes: 04/18/2017 10:37 (72), 08/31/2020 16:52 (4), 11/29/2022 15:00 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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