ASN1C 7.0.0 asn1rt_a.lib rtxMemHeapAlloc integer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability was found in ASN1C 7.0.0. It has been declared as critical. This issue affects the function rtxMemHeapAlloc in the library asn1rt_a.lib. The manipulation results in integer overflow. This vulnerability was named CVE-2016-5080. The attack may be performed from remote. There is no available exploit. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability, which was classified as very critical, was found in ASN1C 7.0.0. Affected is the function rtxMemHeapAlloc in the library asn1rt_a.lib. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 07/18/2016 by Lucas Molas (Website). The advisory is available at github.com. The advisory contains:

A vulnerability found in the runtime support libraries of the ASN1C compiler for C/C++ from Objective Systems Inc. could allow an attacker to remotely execute code in software systems, including embeded software and firmware, that use code generated by the ASN1C compiler. The vulnerability could be triggered remotely without any authentication in scenarios where the vulnerable code receives and processes ASN.1 encoded data from untrusted sources, these may include communications between mobile devices and telecommunication network infrastructure nodes, communications between nodes in a carrier's network or across carrier boundaries, or communication between mutually untrusted endpoints in a data network.
This vulnerability is traded as CVE-2016-5080 since 05/26/2016. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 01/13/2025).

The vulnerability was handled as a non-public zero-day exploit for at least 42 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 7.0.1 or 7.0.2 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The best possible mitigation is suggested to be patching the affected component.

The vulnerability is also documented in the databases at SecurityFocus (BID 91836†) and SecurityTracker (ID 1036386†). See VDB-90260, VDB-94931, VDB-94932 and VDB-94934 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Upgrade: ASN1C 7.0.1/7.0.2

Timelineinfo

05/26/2016 🔍
06/06/2016 +11 days 🔍
07/18/2016 +42 days 🔍
07/19/2016 +1 days 🔍
07/19/2016 +0 days 🔍
07/20/2016 +1 days 🔍
07/20/2016 +0 days 🔍
01/13/2025 +3099 days 🔍

Sourcesinfo

Advisory: 137970
Researcher: Lucas Molas
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-5080 (🔍)
GCVE (CVE): GCVE-0-2016-5080
GCVE (VulDB): GCVE-100-90138
CERT: 🔍
SecurityFocus: 91836 - Objective Systems ASN1C CVE-2016-5080 Heap Based Buffer Overflow Vulnerability
SecurityTracker: 1036386

See also: 🔍

Entryinfo

Created: 07/20/2016 11:47
Updated: 01/13/2025 04:02
Changes: 07/20/2016 11:47 (58), 03/07/2019 23:22 (13), 09/09/2022 07:04 (4), 01/13/2025 04:02 (15)
Complete: 🔍
Cache ID: 216:D8B:103

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