Cisco ASA/Firepower Threat Defense SSL/TLS memory corruption
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 7.8 | $5k-$25k | 0.00 |
Summary
A vulnerability was found in Cisco ASA and Firepower Threat Defense. It has been declared as critical. The affected element is an unknown function of the component SSL/TLS. Such manipulation leads to memory corruption. This vulnerability is documented as CVE-2021-34783. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.
Details
A vulnerability was found in Cisco ASA and Firepower Threat Defense (Firewall Software) (version now known) and classified as critical. Affected by this issue is some unknown processing of the component SSL/TLS. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability.
The weakness was released 10/28/2021 as cisco-sa-ftd-tls-decrypt-dos-BMxYjm8M. The advisory is shared for download at tools.cisco.com. This vulnerability is handled as CVE-2021-34783 since 06/15/2021. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 07/28/2023).
Upgrading eliminates this vulnerability.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Product
Type
Vendor
Name
License
Website
- Vendor: https://www.cisco.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.9VulDB Meta Temp Score: 7.8
VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
CNA Base Score: 8.6
CNA Vector (Cisco Systems, Inc.): 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| 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: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
06/15/2021 🔍10/28/2021 🔍
10/28/2021 🔍
07/28/2023 🔍
Sources
Vendor: cisco.comAdvisory: cisco-sa-ftd-tls-decrypt-dos-BMxYjm8M
Status: Confirmed
CVE: CVE-2021-34783 (🔍)
GCVE (CVE): GCVE-0-2021-34783
GCVE (VulDB): GCVE-100-185576
Entry
Created: 10/28/2021 06:23Updated: 07/28/2023 15:08
Changes: 10/28/2021 06:23 (49), 11/01/2021 08:08 (1), 11/01/2021 08:09 (18), 07/28/2023 15:08 (2)
Complete: 🔍
Cache ID: 216::103
VulDB is the best source for vulnerability data and more expert information about this specific topic.
No comments yet. Languages: en.
Please log in to comment.