Gentoo FoundationGLSA-202208-21libebml: Heap buffer overflow vulnerability
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS
Percentile
88.2%
Background
libebml is a C++ library to parse EBML files.
Description
On 32bit builds of libebml, the length of a string is miscalculated, potentially leading to an exploitable heap overflow.
Impact
An attacker able to provide arbitrary input to libebml could achieve arbitrary code execution.
Workaround
There is no known workaround at this time.
Resolution
Users of libebml on 32 bit architectures should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libebml-1.4.2"
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Gentoo | any | arm | dev-libs/libebml | < 1.4.2 | UNKNOWN |
| Gentoo | any | ppc | dev-libs/libebml | < 1.4.2 | UNKNOWN |
| Gentoo | any | sparc | dev-libs/libebml | < 1.4.2 | UNKNOWN |
| Gentoo | any | x86 | dev-libs/libebml | < 1.4.2 | UNKNOWN |
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS
Percentile
88.2%