Ubuntu.comUB:CVE-2016-2053CVE-2016-2053
4.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:N/I:N/A:C
0.001 Low
EPSS
Percentile
20.6%
The asn1_ber_decoder function in lib/asn1_decoder.c in the Linux kernel
before 4.3 allows attackers to cause a denial of service (panic) via an
ASN.1 BER file that lacks a public key, leading to mishandling by the
public_key_verify_signature function in
crypto/asymmetric_keys/public_key.c.
Bugs
Notes
| Author | Note |
|---|---|
| jdstrand | android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support |
| sbeattie | no fix upstream as 2016-03-03 |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 14.04 | noarch | linux | < 3.13.0-83.127 | UNKNOWN |
| ubuntu | 15.10 | noarch | linux | < 4.2.0-35.40 | UNKNOWN |
| ubuntu | 12.04 | noarch | linux-lts-trusty | < 3.13.0-83.127~precise1 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-lts-utopic | < 3.16.0-69.89~14.04.1 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-lts-vivid | < 3.19.0-56.62~14.04.1 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-lts-wily | < 4.2.0-35.40~14.04.1 | UNKNOWN |
| ubuntu | 15.10 | noarch | linux-raspi2 | < 4.2.0-1028.36 | UNKNOWN |
Related
4.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:N/I:N/A:C
0.001 Low
EPSS
Percentile
20.6%