QEMU up to 5.1.0 hw/pci/pci.c pci_change_irq_level null pointer dereference
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
3.3 | $0-$5k | 0.00 |
A vulnerability, which was classified as problematic, has been found in QEMU up to 5.1.0 (Virtualization Software). Affected by this issue is the function pci_change_irq_level
of the file hw/pci/pci.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability.
The weakness was presented 10/07/2020. The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2020-25742. There are known technical details, but no exploit is available.
Upgrading to version 5.1.1 eliminates this vulnerability.
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: 3.4VulDB Meta Temp Score: 3.3
VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 3.2
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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: Null pointer dereferenceCWE: CWE-476 / CWE-404
ATT&CK: Unknown
Local: No
Remote: Partially
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: 🔍
Upgrade: QEMU 5.1.1
Timeline
09/18/2020 🔍10/07/2020 🔍
10/07/2020 🔍
11/16/2020 🔍
Sources
Product: qemu.orgAdvisory: openwall.com
Status: Not defined
Confirmation: 🔍
CVE: CVE-2020-25742 (🔍)
Entry
Created: 10/07/2020 07:22Updated: 11/16/2020 20:06
Changes: 10/07/2020 07:22 (12), 10/07/2020 07:23 (26), 10/07/2020 07:28 (3), 11/15/2020 10:21 (7), 11/16/2020 20:01 (3), 11/16/2020 20:06 (14)
Complete: 🔍
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