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Multiple vulnerabilities in JerryScript



Published: 2020-06-01
Severity Medium
Patch available NO
Number of vulnerabilities 3
CVE ID CVE-2020-13649
CVE-2020-13623
CVE-2020-13622
CWE ID CWE-476
CWE-400
CWE-617
Exploitation vector Network
Public exploit N/A
Vulnerable software
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JerryScript
Web applications / JS libraries

Vendor JerryScript

Security Advisory

1) NULL pointer dereference

Severity: Medium

CVSSv3: 6.9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C] [PCI]

CVE-ID: CVE-2020-13649

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error during certain out-of-memory conditions in the "parser/js/js-scanner.c" file, as demonstrated by a "scanner_reverse_info_list" NULL pointer dereference and a "scanner_scan_all assertion" failure. A remote attacker can perform a denial of service (DoS) attack.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability..

Vulnerable software versions

JerryScript: 2.2.0

CPE External links

https://github.com/jerryscript-project/jerryscript/commit/69f8e78c2f8d562bd6d8002b5488f1662ac30d24
https://github.com/jerryscript-project/jerryscript/issues/3786
https://github.com/jerryscript-project/jerryscript/issues/3788

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Resource exhaustion

Severity: Medium

CVSSv3: 6.9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C] [PCI]

CVE-ID: CVE-2020-13623

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources within a proxy operation. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

JerryScript: 2.2.0

CPE External links

https://github.com/jerryscript-project/jerryscript/issues/3785
https://exchange.xforce.ibmcloud.com/vulnerabilities/182612

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Reachable Assertion

Severity: Medium

CVSSv3: 6.9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C] [PCI]

CVE-ID: CVE-2020-13622

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion when property key query for a Proxy object returns unintended data. A remote attacker can cause a denial of service condition on the target system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

JerryScript: 2.2.0

CPE External links

https://github.com/jerryscript-project/jerryscript/issues/3787
https://github.com/jerryscript-project/jerryscript/pull/3797
https://exchange.xforce.ibmcloud.com/vulnerabilities/182617

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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