4.4 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:M/Au:N/C:P/I:P/A:P
8.6 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
9.5 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
48.3%
Package : node-tar
Version : 4.4.6+ds1-3+deb10u2
CVE ID : CVE-2021-37701 CVE-2021-37712
Debian Bug : 993981
Cache poisoning vulnerabilities were found in node-tar, a Node.js module
used to read and write portable tar archives, which may result in
arbitrary file creation or overwrite.
CVE-2021-37701
It was discovered that node-tar performed insufficient symlink
protection, thereby making directory cache vulnerable to poisoning
using symbolic links.
Upon extracting an archive containing a directory 'foo/bar' followed
with a symbolic link 'foo\\bar' to an arbitrary location, node-tar
would extract arbitrary files into the symlink target, thus allowing
arbitrary file creation and overwrite.
Moreover, on case-insensitive filesystems, a similar issue occurred
with a directory 'FOO' followed with a symbolic link 'foo'.
CVE-2021-37712
Similar to CVE-2021-37701, a specially crafted tar archive
containing two directories and a symlink with names containing
unicode values that normalized to the same value, would bypass
node-tar's symlink checks on directories, thus allowing arbitrary
file creation and overwrite.
For Debian 10 buster, these problems have been fixed in version
4.4.6+ds1-3+deb10u2.
We recommend that you upgrade your node-tar packages.
For the detailed security status of node-tar please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/node-tar
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
Attachment:
signature.asc
Description: PGP signature
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 11 | all | node-tar | < 6.0.5+ds1+~cs11.3.9-1+deb11u2 | node-tar_6.0.5+ds1+~cs11.3.9-1+deb11u2_all.deb |
Debian | 10 | all | node-tar | < 4.4.6+ds1-3+deb10u2 | node-tar_4.4.6+ds1-3+deb10u2_all.deb |
4.4 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:M/Au:N/C:P/I:P/A:P
8.6 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
9.5 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
48.3%