CVE-2021-20197

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-20197

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-20197.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-20197

Related

Published

2021-03-26T17:15:12Z

Modified

2024-12-24T00:58:19.115479Z

Severity

6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator

Summary

[none]

Details

There is an open race window when writing output in the following utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip, ranlib. When these utilities are run as a privileged user (presumably as part of a script updating binaries across different users), an unprivileged user can trick these utilities into getting ownership of arbitrary files through a symlink.

References

Affected packages

Debian:11 / binutils

Package

Name: binutils
Purl: pkg:deb/debian/binutils?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.35.2-2

2.35.50.20201103-1

2.35.50.20201125-1

2.35.50.20201206-1

2.35.50.20201209-1

2.35.50.20201218-1

2.35.50.20210106-1

2.35.90.20210113-1

2.35.90.20210120-1

2.36-1

2.36-2

2.36-2+2.35.2

2.36-2+2.35.2.1

2.36+2.35.2-1

2.36.1-1

2.36.1-2

2.36.1-3

2.36.1-4

2.36.1-5

2.36.1-6

2.36.50.20210601-1

2.36.50.20210618-1

2.36.50.20210628-1

2.36.90.20210705-1

2.37-1

2.37-2

2.37-3

2.37-4

2.37-5

2.37-6

2.37-7

2.37-8

2.37-9

2.37-10

2.37-10.1

2.37.50.20211102-1

2.37.50.20211115-1

2.37.50.20211118-1

2.37.50.20211201-1

2.37.50.20220106-1

2.37.50.20220106-2

2.37.50.20220121-1

2.37.90.20220123-1

2.37.90.20220123-2

2.37.90.20220130-1

2.37.90.20220130-2

2.37.90.20220207-1

2.38-1

2.38-2

2.38-3

2.38-4

2.38.50.20220503-1

2.38.50.20220509-1

2.38.50.20220512-1

2.38.50.20220527-1

2.38.50.20220527-2

2.38.50.20220609-1

2.38.50.20220609-2

2.38.50.20220615-1

2.38.50.20220615-2

2.38.50.20220615-3

2.38.50.20220615-4

2.38.50.20220622-1

2.38.50.20220627-1

2.38.50.20220629-1

2.38.50.20220629-2

2.38.50.20220629-3

2.38.50.20220629-4

2.38.50.20220707-1

2.38.90.20220713-1

2.38.90.20220713-2

2.39-1

2.39-2

2.39-3

2.39-4

2.39-5

2.39-6

2.39-7

2.39-8

2.39.50.20221004-1

2.39.50.20221010-1

2.39.50.20221101-1

2.39.50.20221101-2

2.39.50.20221116-1

2.39.50.20221129-1

2.39.50.20221208-1

2.39.50.20221208-2

2.39.50.20221208-3

2.39.50.20221208-4

2.39.50.20221208-5

2.39.50.20221224-1

2.39.90.20221231-1

2.39.90.20230104-1

2.39.90.20230110-1

2.40-1

2.40-2

2.40.50.20230111-1

2.40.50.20230215-1

2.40.50.20230501-1

2.40.50.20230510-1

2.40.50.20230602-1

2.40.50.20230611-1

2.40.50.20230611-2

2.40.50.20230622-1

2.40.50.20230625-1

2.40.50.20230630-1

2.40.90.20230705-1

2.40.90.20230714-1

2.40.90.20230714-2

2.40.90.20230720-1

2.40.90.20230729-1

2.40.90.20230729-2

2.41-1

2.41-2

2.41-3

2.41-4

2.41-5

2.41-6

2.41-7

2.41.50.20230731-1

2.41.50.20230803-1

2.41.50.20230905-1

2.41.50.20231010-1

2.41.50.20231101-1

2.41.50.20231125-1

2.41.50.20231202-1

2.41.50.20231206-1

2.41.50.20231214-1

2.41.50.20231227-1

2.41.90.20240115-1

2.41.90.20240122-1

2.42-1

2.42-2

2.42-2+hurd.1

2.42-3

2.42-4

2.42.50.20240614-1

2.42.50.20240618-1

2.42.50.20240625-1

2.42.50.20240710-1

2.42.90.20240720-1

2.42.90.20240720-2

2.43-1

2.43-2

2.43.1-1

2.43.1-2

2.43.1-3

2.43.1-4

2.43.1-5

2.43.50.20240817-1

2.43.50.20240909-1

2.43.50.20241004-1

2.43.50.20241112-1

2.43.50.20241126-1

2.43.50.20241126-2

2.43.50.20241126-3

2.43.50.20241204-1

2.43.50.20241204-2

2.43.50.20241210-1

2.43.50.20241215-1

2.43.50.20241221-1

Ecosystem specific

{
    "urgency": "unimportant"
}

Debian:12 / binutils

Package

Name: binutils
Purl: pkg:deb/debian/binutils?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.37-3

Ecosystem specific

{
    "urgency": "unimportant"
}

Debian:13 / binutils

Package

Name: binutils
Purl: pkg:deb/debian/binutils?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.37-3

Ecosystem specific

{
    "urgency": "unimportant"
}

Git / sourceware.org/git/binutils-gdb.git

Affected ranges

Type: GIT
Repo: https://sourceware.org/git/binutils-gdb.git
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Last affected

2cb5c79dad39dd438fb0f7372ac04cf5aa2a7db7

Affected versions

Other

binu_ss_19990502

binutils-2_35

gdb-4_18-branchpoint

gdb-9-branchpoint

gdb_5_2-branchpoint

gdb_5_3-branchpoint

gdb_6_0-branchpoint

gdb_6_1-branchpoint

gdb_6_2-branchpoint

gdb_6_3-branchpoint

gdb_6_4-branchpoint

gdb_6_5-branchpoint

gdb_6_6-branchpoint

gdb_6_7-branchpoint

gdb_6_8-branchpoint

gdb_7_0-branchpoint

gdb_7_1-branchpoint

gdb_7_2-branchpoint

gdb_7_3-branchpoint

gdb_7_4-branchpoint

gdb_7_5-branchpoint

gdb_7_6-branchpoint

readline_4_0

users/ARM/embedded-binutils-master-2016q4

users/ARM/embedded-binutils-master-2017q4

users/ARM/embedded-binutils-master-2018q4

users/ARM/embedded-gdb-master-2017q4

users/ARM/embedded-gdb-master-2018q4

gdb-7.*

gdb-7.10-branchpoint

gdb-7.11-branchpoint

gdb-7.12-branchpoint

gdb-7.7-branchpoint

gdb-7.8-branchpoint

gdb-7.9-branchpoint

gdb-8.*

gdb-8.0-branchpoint

gdb-8.1-branchpoint

gdb-8.2-branchpoint

gdb-8.3-branchpoint