HexChat 2.10.2 CAP LS Message common/inbound.c inbound_cap_ls memory corruption
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.0 | $0-$5k | 0.00 |
A vulnerability was found in HexChat 2.10.2 (Chat Software). It has been classified as critical. This affects the function inbound_cap_ls
of the file common/inbound.c of the component CAP LS Message Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
Stack-based buffer overflow in the inbound_cap_ls function in common/inbound.c in HexChat 2.10.2 allows remote IRC servers to cause a denial of service (crash) via a large number of options in a CAP LS message.
The bug was discovered 04/05/2016. The weakness was shared 01/18/2017 by PizzaHatHacker as EDB-ID 39657 as confirmed exploit (Exploit-DB). The advisory is shared at exploit-db.com. This vulnerability is uniquely identified as CVE-2016-2233 since 02/07/2016. 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 and a public exploit are known.
A public exploit has been developed by PizzaHatHacker and been published even before and not after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 289 days. During that time the estimated underground price was around $0-$5k.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The vulnerability is also documented in the vulnerability database at Exploit-DB (39657). The entry 95468 is related to this item.
Product
Type
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.4VulDB Meta Temp Score: 7.2
VulDB Base Score: 7.3
VulDB Temp Score: 6.9
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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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
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: PizzaHatHacker
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Exploit-DB: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
02/07/2016 🔍04/04/2016 🔍
04/04/2016 🔍
04/04/2016 🔍
04/05/2016 🔍
01/18/2017 🔍
01/18/2017 🔍
01/19/2017 🔍
07/24/2020 🔍
Sources
Advisory: EDB-ID 39657Researcher: PizzaHatHacker
Status: Confirmed
CVE: CVE-2016-2233 (🔍)
SecurityFocus: 95920 - HexChat CVE-2016-2233 Stack-Based Buffer Overflow Vulnerability
OSVDB: - CVE-2016-2233 - HexChat - Buffer Overflow Issue
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍
Entry
Created: 01/19/2017 09:39Updated: 07/24/2020 12:59
Changes: 01/19/2017 09:39 (70), 07/24/2020 12:59 (5)
Complete: 🔍
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