CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.5 | $0-$5k | 0.00 |
A vulnerability has been found in QEMU 5.0.0 (Virtualization Software) and classified as critical. This vulnerability affects the function usb_packet_map
of the file hw/usb/hcd-xhci.c. The manipulation as part of a Return Value leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:
QEMU 5.0.0 has a use-after-free in hw/usb/hcd-xhci.c because the usb_packet_map return value is not checked.
The weakness was disclosed 09/25/2020 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2020-25084 since 09/02/2020. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/13/2020).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The entries 161936 and 161933 are pretty similar.
Product
Type
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 4.5VulDB Meta Temp Score: 4.5
VulDB Base Score: 5.7
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 3.2
NVD Vector: 🔍
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: Use after freeCWE: CWE-416 / CWE-119
ATT&CK: Unknown
Local: Yes
Remote: No
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: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
09/02/2020 🔍09/25/2020 🔍
09/25/2020 🔍
11/14/2020 🔍
Sources
Product: qemu.orgAdvisory: openwall.com
Status: Not defined
Confirmation: 🔍
CVE: CVE-2020-25084 (🔍)
See also: 🔍
Entry
Created: 09/25/2020 15:28Updated: 11/14/2020 06:49
Changes: 09/25/2020 15:28 (39), 09/25/2020 15:33 (18), 11/13/2020 07:52 (1), 11/14/2020 06:49 (1)
Complete: 🔍
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