Netwide Assembler 2.14rc0 token use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Netwide Assembler 2.14rc0. Affected is the function token. Performing a manipulation results in use after free. This vulnerability is known as CVE-2017-10686. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Netwide Assembler 2.14rc0 (Programming Tool Software). This affects the function token. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In Netwide Assembler (NASM) 2.14rc0, there are multiple heap use after free vulnerabilities in the tool nasm. The related heap is allocated in the token() function and freed in the detoken() function (called by pp_getline()) - it is used again at multiple positions later that could cause multiple damages. For example, it causes a corrupted double-linked list in detoken(), a double free or corruption in delete_Token(), and an out-of-bounds write in detoken(). It has a high possibility to lead to a remote code execution attack.

The bug was discovered 06/24/2017. The weakness was published 06/29/2017 (Website). It is possible to read the advisory at bugzilla.nasm.us. This vulnerability is uniquely identified as CVE-2017-10686 since 06/29/2017. 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 of the vulnerability are known, but there is no available exploit.

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 102039 (Debian DLA-1041-1 : nasm security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170238 (SUSE Enterprise Linux Security Update for nasm (SUSE-SU-2017:2045-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (102039). Similar entry is available at VDB-103361. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 102039
Nessus Name: Debian DLA-1041-1 : nasm security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for nasm FEDORA-2017-a1fe6d2b86
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: 🔍

Timelineinfo

06/24/2017 🔍
06/29/2017 +5 days 🔍
06/29/2017 +0 days 🔍
06/29/2017 +0 days 🔍
06/30/2017 +1 days 🔍
07/28/2017 +28 days 🔍
07/31/2017 +3 days 🔍
12/09/2022 +1957 days 🔍

Sourcesinfo

Advisory: USN-3694-1
Status: Not defined

CVE: CVE-2017-10686 (🔍)
GCVE (CVE): GCVE-0-2017-10686
GCVE (VulDB): GCVE-100-102915
See also: 🔍

Entryinfo

Created: 06/30/2017 09:04
Updated: 12/09/2022 14:19
Changes: 06/30/2017 09:04 (72), 10/21/2019 10:15 (3), 12/09/2022 14:19 (4)
Complete: 🔍
Cache ID: 216::103

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