CVE-2021-33912

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-33912

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33912.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-33912

Related

Published

2022-01-19T18:15:07Z

Modified

2024-12-05T15:28:30.115213Z

Severity

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

Summary

[none]

Details

libspf2 before 1.2.11 has a four-byte heap-based buffer overflow that might allow remote attackers to execute arbitrary code (via an unauthenticated e-mail message from anywhere on the Internet) with a crafted SPF DNS record, because of incorrect sprintf usage in SPFrecordexpanddata in spfexpand.c. The vulnerable code may be part of the supply chain of a site's e-mail infrastructure (e.g., with additional configuration, Exim can use libspf2; the Postfix web site links to unofficial patches for use of libspf2 with Postfix; older versions of spfquery relied on libspf2) but most often is not.

References

Affected packages

Alpine:v3.14 / libspf2

Package

Name: libspf2
Purl: pkg:apk/alpine/libspf2?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.2.11-r0

Affected versions

1.*

1.2.9-r0

1.2.9-r1

1.2.9-r2

1.2.9-r3

1.2.9-r4

1.2.9-r5

1.2.9-r6

1.2.9-r7

1.2.9-r8

1.2.10-r0

1.2.10-r1

1.2.10-r2

1.2.10-r3

1.2.10-r4

1.2.10-r5

Alpine:v3.15 / libspf2

Package

Name: libspf2
Purl: pkg:apk/alpine/libspf2?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.2.11-r0

Affected versions

1.*

1.2.9-r0

1.2.9-r1

1.2.9-r2

1.2.9-r3

1.2.9-r4

1.2.9-r5

1.2.9-r6

1.2.9-r7

1.2.9-r8

1.2.10-r0

1.2.10-r1

1.2.10-r2

1.2.10-r3

1.2.10-r4

1.2.10-r5

1.2.10-r6

Alpine:v3.16 / libspf2

Package

Name: libspf2
Purl: pkg:apk/alpine/libspf2?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.2.11-r0

Affected versions

1.*

1.2.9-r0

1.2.9-r1

1.2.9-r2

1.2.9-r3

1.2.9-r4

1.2.9-r5

1.2.9-r6

1.2.9-r7

1.2.9-r8

1.2.10-r0

1.2.10-r1

1.2.10-r2

1.2.10-r3

1.2.10-r4

1.2.10-r5

1.2.10-r6

1.2.10-r7

Alpine:v3.17 / libspf2

Package

Name: libspf2
Purl: pkg:apk/alpine/libspf2?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.2.11-r0

Affected versions

1.*

1.2.9-r0

1.2.9-r1

1.2.9-r2

1.2.9-r3

1.2.9-r4

1.2.9-r5

1.2.9-r6

1.2.9-r7

1.2.9-r8

1.2.10-r0

1.2.10-r1

1.2.10-r2

1.2.10-r3

1.2.10-r4

1.2.10-r5

1.2.10-r6

1.2.10-r7

Alpine:v3.18 / libspf2

Package

Name: libspf2
Purl: pkg:apk/alpine/libspf2?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.2.11-r0

Affected versions

1.*

1.2.9-r0

1.2.9-r1

1.2.9-r2

1.2.9-r3

1.2.9-r4

1.2.9-r5

1.2.9-r6

1.2.9-r7

1.2.9-r8

1.2.10-r0

1.2.10-r1

1.2.10-r2

1.2.10-r3

1.2.10-r4

1.2.10-r5

1.2.10-r6

1.2.10-r7

Alpine:v3.19 / libspf2

Package

Name: libspf2
Purl: pkg:apk/alpine/libspf2?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.2.11-r0

Affected versions

1.*

1.2.9-r0

1.2.9-r1

1.2.9-r2

1.2.9-r3

1.2.9-r4

1.2.9-r5

1.2.9-r6

1.2.9-r7

1.2.9-r8

1.2.10-r0

1.2.10-r1

1.2.10-r2

1.2.10-r3

1.2.10-r4

1.2.10-r5

1.2.10-r6

1.2.10-r7

Alpine:v3.20 / libspf2

Package

Name: libspf2
Purl: pkg:apk/alpine/libspf2?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.2.11-r0

Affected versions

1.*

1.2.9-r0

1.2.9-r1

1.2.9-r2

1.2.9-r3

1.2.9-r4

1.2.9-r5

1.2.9-r6

1.2.9-r7

1.2.9-r8

1.2.10-r0

1.2.10-r1

1.2.10-r2

1.2.10-r3

1.2.10-r4

1.2.10-r5

1.2.10-r6

1.2.10-r7

Alpine:v3.21 / libspf2

Package

Name: libspf2
Purl: pkg:apk/alpine/libspf2?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.2.11-r0

Affected versions

1.*

1.2.9-r0

1.2.9-r1

1.2.9-r2

1.2.9-r3

1.2.9-r4

1.2.9-r5

1.2.9-r6

1.2.9-r7

1.2.9-r8

1.2.10-r0

1.2.10-r1

1.2.10-r2

1.2.10-r3

1.2.10-r4

1.2.10-r5

1.2.10-r6

1.2.10-r7

Debian:11 / libspf2

Package

Name: libspf2
Purl: pkg:deb/debian/libspf2?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.2.10-7.1~deb11u1

Affected versions

1.*

1.2.10-7

1.2.10-7.1~deb10u1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / libspf2

Package

Name: libspf2
Purl: pkg:deb/debian/libspf2?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.2.10-7.1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / libspf2

Package

Name: libspf2
Purl: pkg:deb/debian/libspf2?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.2.10-7.1

Ecosystem specific

{
    "urgency": "not yet assigned"
}