Search CVE reports
1 – 6 of 6 results
CVE-2023-40551
Medium prioritySome fixes available 4 of 19
A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase.
3 affected packages
secureboot-db, shim, shim-signed
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS | 16.04 LTS |
|---|---|---|---|---|---|
| secureboot-db | Not affected | Not affected | Not affected | Not affected | Not affected |
| shim | Fixed | Vulnerable | Vulnerable | Needs evaluation | Ignored |
| shim-signed | Fixed | Vulnerable | Vulnerable | Needs evaluation | Ignored |
CVE-2023-40550
Medium prioritySome fixes available 4 of 19
An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase.
3 affected packages
secureboot-db, shim, shim-signed
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS | 16.04 LTS |
|---|---|---|---|---|---|
| secureboot-db | Not affected | Not affected | Not affected | Not affected | Not affected |
| shim | Fixed | Vulnerable | Vulnerable | Needs evaluation | Ignored |
| shim-signed | Fixed | Vulnerable | Vulnerable | Needs evaluation | Ignored |
CVE-2023-40549
Medium prioritySome fixes available 4 of 19
An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim,...
3 affected packages
secureboot-db, shim, shim-signed
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS | 16.04 LTS |
|---|---|---|---|---|---|
| secureboot-db | Not affected | Not affected | Not affected | Not affected | Not affected |
| shim | Fixed | Vulnerable | Vulnerable | Needs evaluation | Ignored |
| shim-signed | Fixed | Vulnerable | Vulnerable | Needs evaluation | Ignored |
CVE-2023-40548
Medium prioritySome fixes available 4 of 19
A buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed from the PE binary being used by Shim. This value is further used for memory...
3 affected packages
secureboot-db, shim, shim-signed
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS | 16.04 LTS |
|---|---|---|---|---|---|
| secureboot-db | Not affected | Not affected | Not affected | Not affected | Not affected |
| shim | Fixed | Vulnerable | Vulnerable | Needs evaluation | Ignored |
| shim-signed | Fixed | Vulnerable | Vulnerable | Needs evaluation | Ignored |
CVE-2023-40547
Medium prioritySome fixes available 4 of 19
A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a...
3 affected packages
secureboot-db, shim, shim-signed
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS | 16.04 LTS |
|---|---|---|---|---|---|
| secureboot-db | Not affected | Not affected | Not affected | Not affected | Not affected |
| shim | Fixed | Vulnerable | Vulnerable | Needs evaluation | Ignored |
| shim-signed | Fixed | Vulnerable | Vulnerable | Needs evaluation | Ignored |
CVE-2023-40546
Medium prioritySome fixes available 4 of 19
A flaw was found in Shim when an error happened while creating a new ESL variable. If Shim fails to create the new variable, it tries to print an error message to the user; however, the number of parameters used by the logging...
3 affected packages
secureboot-db, shim, shim-signed
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS | 16.04 LTS |
|---|---|---|---|---|---|
| secureboot-db | Not affected | Not affected | Not affected | Not affected | Not affected |
| shim | Fixed | Vulnerable | Vulnerable | Needs evaluation | Ignored |
| shim-signed | Fixed | Vulnerable | Vulnerable | Needs evaluation | Ignored |