VDB-101829 · CVE-2017-9250 · Qualys 370464

JerryScript 1.0 js-lexer.c jmem_heap_free_block null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
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6.2$0-$5k0.00

A vulnerability, which was classified as problematic, was found in JerryScript 1.0. This affects the function jmem_heap_free_block of the file jerry-core/parser/js/js-lexer.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

The lexer_process_char_literal function in jerry-core/parser/js/js-lexer.c in JerryScript 1.0 does not skip memory allocation for empty strings, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via malformed JavaScript source code, related to the jmem_heap_free_block function.

The bug was discovered 05/13/2017. The weakness was shared 05/28/2017 (GitHub Repository). The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2017-9250 since 05/28/2017. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is 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 commercial vulnerability scanner Qualys is able to test this issue with plugin 370464 (JerryScript Denial of Service Vulnerability).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-232916, VDB-233327, VDB-236996 and VDB-237609 are related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.3
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

05/13/2017 🔍
05/28/2017 +15 days 🔍
05/28/2017 +0 days 🔍
05/28/2017 +0 days 🔍
05/29/2017 +1 days 🔍
12/07/2022 +2018 days 🔍

Sourcesinfo

Advisory: e58f2880df608652aff7fd35c45b242467ec0e79
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-9250 (🔍)
SecurityTracker: 1038413
OSVDB: - CVE-2017-9250 - Jerryscript - Jerryscript - Medium

See also: 🔍

Entryinfo

Created: 05/29/2017 08:44
Updated: 12/07/2022 13:17
Changes: 05/29/2017 08:44 (58), 10/03/2020 17:49 (3), 12/25/2020 17:56 (3), 12/07/2022 13:17 (4)
Complete: 🔍
Cache ID: 3:B33:103

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