Ubuntu.comUB:CVE-2018-12886CVE-2018-12886
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.003 Low
EPSS
Percentile
69.0%
stack_protect_prologue in cfgexpand.c and stack_protect_epilogue in
function.c in GNU Compiler Collection (GCC) 4.1 through 8 (under certain
circumstances) generate instruction sequences when targeting ARM targets
that spill the address of the stack protector guard, which allows an
attacker to bypass the protection of -fstack-protector,
-fstack-protector-all, -fstack-protector-strong, and
-fstack-protector-explicit against stack overflow by controlling what the
stack canary is compared against.
Bugs
Notes
| Author | Note |
|---|---|
| mdeslaur | Upstream has fixed this in GCC9 only as of 2019-05-30. 32-bit ARM only, risky backport, and would require archive rebuild. Setting priority as low for now, we may decide this issue is not worth fixing in stable releases. |
| sbeattie | 14.04 LTS (trusty) Pro Infra and 16.04 LTS (xenial) Pro Infra do not support 32-bit Arm as an architecture. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | gcc-4.8 | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | gcc-6 | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | gcc-7 | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | gcc-7 | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | gcc-8 | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | gcc-8 | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | gcc-arm-none-eabi | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | gcc-arm-none-eabi | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | gcc-arm-none-eabi | < any | UNKNOWN |
| ubuntu | 23.10 | noarch | gcc-arm-none-eabi | < any | UNKNOWN |
Related
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.003 Low
EPSS
Percentile
69.0%