Node.js up to 10.8.x Buffer.alloc encoding memory corruption
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.3 | $0-$5k | 0.00 |
A vulnerability has been found in Node.js up to 10.8.x (JavaScript Library) and classified as problematic. This vulnerability affects the function Buffer.alloc
. The manipulation of the argument encoding
as part of a Argument leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality. CVE summarizes:
In all versions of Node.js 10 prior to 10.9.0, an argument processing flaw can cause `Buffer.alloc()` to return uninitialized memory. This method is intended to be safe and only return initialized, or cleared, memory. The third argument specifying `encoding` can be passed as a number, this is misinterpreted by `Buffer's` internal "fill" method as the `start` to a fill operation. This flaw may be abused where `Buffer.alloc()` arguments are derived from user input to return uncleared memory blocks that may contain sensitive information.
The bug was discovered 08/16/2018. The weakness was shared 08/21/2018 (Website). The advisory is shared for download at nodejs.org. This vulnerability was named CVE-2018-7166 since 02/14/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.
The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 112128 (FreeBSD : node.js -- multiple vulnerabilities (0904e81f-a89d-11e8-afbb-bc5ff4f77b71)), 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 10.9.0 eliminates this vulnerability. A possible mitigation has been published 5 days after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (112128). The entry 123102 is related to this item.
Product
Type
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.4VulDB Meta Temp Score: 6.3
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Memory corruptionCWE: CWE-119
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 112128
Nessus Name: FreeBSD : node.js -- multiple vulnerabilities (0904e81f-a89d-11e8-afbb-bc5ff4f77b71)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: Node.js 10.9.0
Timeline
02/14/2018 🔍08/16/2018 🔍
08/21/2018 🔍
08/21/2018 🔍
08/22/2018 🔍
08/25/2018 🔍
08/28/2018 🔍
05/04/2023 🔍
Sources
Advisory: RHSA-2018:2553Status: Not defined
Confirmation: 🔍
CVE: CVE-2018-7166 (🔍)
See also: 🔍
Entry
Created: 08/22/2018 08:18Updated: 05/04/2023 08:41
Changes: 08/22/2018 08:18 (73), 03/17/2020 13:31 (3), 05/04/2023 08:41 (4)
Complete: 🔍
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