p PatchFirst

CVE-2021-3592

CVE-2021-3592

This page contains facts from public vulnerability sources. Check the original advisory before updating.

An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the bootp_input() function and could occur while processing a udp packet that is smaller than the size of the 'bootp_t' structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.

CVSS 3.8 · Low · EPSS 0.3% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • qemu

    Versions
    • libslirp 4.6.0: Affected

    No fix published

  • libslirp Debian:12

    Affected ranges
    • ECOSYSTEM: < 4.6.1-1

    Update to 4.6.1-1

  • libslirp Debian:13

    Affected ranges
    • ECOSYSTEM: < 4.6.1-1

    Update to 4.6.1-1

  • libslirp Debian:14

    Affected ranges
    • ECOSYSTEM: < 4.6.1-1

    Update to 4.6.1-1

  • qemu Debian:12

    Affected ranges
    • ECOSYSTEM: < 1:4.1-2

    Update to 1:4.1-2

  • qemu Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:4.1-2

    Update to 1:4.1-2

  • qemu Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:4.1-2

    Update to 1:4.1-2

  • qemu Ubuntu:Pro:14.04:LTS

    Versions
    • 1.5.0+dfsg-3ubuntu5
    • 1.5.0+dfsg-3ubuntu6
    • 1.6.0+dfsg-2ubuntu1
    • 1.6.0+dfsg-2ubuntu2
    • 1.6.0+dfsg-2ubuntu3
    • 1.6.0+dfsg-2ubuntu4
    • 1.7.0+dfsg-2ubuntu1
    • 1.7.0+dfsg-2ubuntu2
    • 1.7.0+dfsg-2ubuntu3
    • 1.7.0+dfsg-2ubuntu4
    • 1.7.0+dfsg-2ubuntu5
    • 1.7.0+dfsg-2ubuntu7
    • 1.7.0+dfsg-2ubuntu8
    • 1.7.0+dfsg-2ubuntu9
    • 1.7.0+dfsg-3ubuntu1~ppa1
    • 1.7.0+dfsg-3ubuntu1
    • 1.7.0+dfsg-3ubuntu2
    • 1.7.0+dfsg-3ubuntu3
    • 1.7.0+dfsg-3ubuntu4
    • 1.7.0+dfsg-3ubuntu5
    • 1.7.0+dfsg-3ubuntu6
    • 1.7.0+dfsg-3ubuntu7
    • 2.0.0~rc1+dfsg-0ubuntu1
    • 2.0.0~rc1+dfsg-0ubuntu2
    • 2.0.0~rc1+dfsg-0ubuntu3
    • 2.0.0~rc1+dfsg-0ubuntu3.1
    • 2.0.0+dfsg-2ubuntu1
    • 2.0.0+dfsg-2ubuntu1.1
    • 2.0.0+dfsg-2ubuntu1.2
    • 2.0.0+dfsg-2ubuntu1.3
    • 2.0.0+dfsg-2ubuntu1.5
    • 2.0.0+dfsg-2ubuntu1.6
    • 2.0.0+dfsg-2ubuntu1.7
    • 2.0.0+dfsg-2ubuntu1.8
    • 2.0.0+dfsg-2ubuntu1.9
    • 2.0.0+dfsg-2ubuntu1.10
    • 2.0.0+dfsg-2ubuntu1.11
    • 2.0.0+dfsg-2ubuntu1.13
    • 2.0.0+dfsg-2ubuntu1.14
    • 2.0.0+dfsg-2ubuntu1.15
    • 2.0.0+dfsg-2ubuntu1.16
    • 2.0.0+dfsg-2ubuntu1.17
    • 2.0.0+dfsg-2ubuntu1.18
    • 2.0.0+dfsg-2ubuntu1.19
    • 2.0.0+dfsg-2ubuntu1.20
    • 2.0.0+dfsg-2ubuntu1.21
    • 2.0.0+dfsg-2ubuntu1.22
    • 2.0.0+dfsg-2ubuntu1.24
    • 2.0.0+dfsg-2ubuntu1.25
    • 2.0.0+dfsg-2ubuntu1.26
    • 2.0.0+dfsg-2ubuntu1.27
    • 2.0.0+dfsg-2ubuntu1.28
    • 2.0.0+dfsg-2ubuntu1.29
    • 2.0.0+dfsg-2ubuntu1.30
    • 2.0.0+dfsg-2ubuntu1.31
    • 2.0.0+dfsg-2ubuntu1.32
    • 2.0.0+dfsg-2ubuntu1.33
    • 2.0.0+dfsg-2ubuntu1.34
    • 2.0.0+dfsg-2ubuntu1.35
    • 2.0.0+dfsg-2ubuntu1.36
    • 2.0.0+dfsg-2ubuntu1.38
    • 2.0.0+dfsg-2ubuntu1.39
    • 2.0.0+dfsg-2ubuntu1.40
    • 2.0.0+dfsg-2ubuntu1.41
    • 2.0.0+dfsg-2ubuntu1.42
    • 2.0.0+dfsg-2ubuntu1.43
    • 2.0.0+dfsg-2ubuntu1.44
    • 2.0.0+dfsg-2ubuntu1.45
    • 2.0.0+dfsg-2ubuntu1.46
    • 2.0.0+dfsg-2ubuntu1.47
    • 2.0.0+dfsg-2ubuntu1.47+esm1
    • 2.0.0+dfsg-2ubuntu1.47+esm2
    • 2.0.0+dfsg-2ubuntu1.47+esm3
    Affected ranges
    • ECOSYSTEM: < 2.0.0+dfsg-2ubuntu1.47+esm4

    Update to 2.0.0+dfsg-2ubuntu1.47+esm4

  • qemu Ubuntu:Pro:16.04:LTS

    Versions
    • 1:2.3+dfsg-5ubuntu9
    • 1:2.3+dfsg-5ubuntu10
    • 1:2.4+dfsg-4ubuntu1
    • 1:2.4+dfsg-4ubuntu2
    • 1:2.4+dfsg-4ubuntu3
    • 1:2.4+dfsg-5ubuntu3
    • 1:2.5+dfsg-1ubuntu2
    • 1:2.5+dfsg-1ubuntu3
    • 1:2.5+dfsg-1ubuntu4
    • 1:2.5+dfsg-1ubuntu5
    • 1:2.5+dfsg-5ubuntu1
    • 1:2.5+dfsg-5ubuntu2
    • 1:2.5+dfsg-5ubuntu4
    • 1:2.5+dfsg-5ubuntu6
    • 1:2.5+dfsg-5ubuntu7
    • 1:2.5+dfsg-5ubuntu10
    • 1:2.5+dfsg-5ubuntu10.1
    • 1:2.5+dfsg-5ubuntu10.2
    • 1:2.5+dfsg-5ubuntu10.3
    • 1:2.5+dfsg-5ubuntu10.4
    • 1:2.5+dfsg-5ubuntu10.5
    • 1:2.5+dfsg-5ubuntu10.6
    • 1:2.5+dfsg-5ubuntu10.7
    • 1:2.5+dfsg-5ubuntu10.8
    • 1:2.5+dfsg-5ubuntu10.9
    • 1:2.5+dfsg-5ubuntu10.10
    • 1:2.5+dfsg-5ubuntu10.11
    • 1:2.5+dfsg-5ubuntu10.13
    • 1:2.5+dfsg-5ubuntu10.14
    • 1:2.5+dfsg-5ubuntu10.15
    • 1:2.5+dfsg-5ubuntu10.16
    • 1:2.5+dfsg-5ubuntu10.20
    • 1:2.5+dfsg-5ubuntu10.21
    • 1:2.5+dfsg-5ubuntu10.22
    • 1:2.5+dfsg-5ubuntu10.24
    • 1:2.5+dfsg-5ubuntu10.25
    • 1:2.5+dfsg-5ubuntu10.26
    • 1:2.5+dfsg-5ubuntu10.28
    • 1:2.5+dfsg-5ubuntu10.29
    • 1:2.5+dfsg-5ubuntu10.30
    • 1:2.5+dfsg-5ubuntu10.31
    • 1:2.5+dfsg-5ubuntu10.32
    • 1:2.5+dfsg-5ubuntu10.33
    • 1:2.5+dfsg-5ubuntu10.34
    • 1:2.5+dfsg-5ubuntu10.35
    • 1:2.5+dfsg-5ubuntu10.36
    • 1:2.5+dfsg-5ubuntu10.37
    • 1:2.5+dfsg-5ubuntu10.38
    • 1:2.5+dfsg-5ubuntu10.39
    • 1:2.5+dfsg-5ubuntu10.40
    • 1:2.5+dfsg-5ubuntu10.41
    • 1:2.5+dfsg-5ubuntu10.42
    • 1:2.5+dfsg-5ubuntu10.43
    • 1:2.5+dfsg-5ubuntu10.44
    • 1:2.5+dfsg-5ubuntu10.45
    • 1:2.5+dfsg-5ubuntu10.46
    • 1:2.5+dfsg-5ubuntu10.47
    • 1:2.5+dfsg-5ubuntu10.48
    • 1:2.5+dfsg-5ubuntu10.49
    • 1:2.5+dfsg-5ubuntu10.51
    • 1:2.5+dfsg-5ubuntu10.51+esm1
    • 1:2.5+dfsg-5ubuntu10.51+esm2
    Affected ranges
    • ECOSYSTEM: < 1:2.5+dfsg-5ubuntu10.51+esm3

    Update to 1:2.5+dfsg-5ubuntu10.51+esm3

  • qemu Ubuntu:18.04:LTS

    Versions
    • 1:2.10+dfsg-0ubuntu3
    • 1:2.10+dfsg-0ubuntu4
    • 1:2.10+dfsg-0ubuntu5
    • 1:2.11+dfsg-1ubuntu1
    • 1:2.11+dfsg-1ubuntu2
    • 1:2.11+dfsg-1ubuntu4
    • 1:2.11+dfsg-1ubuntu5
    • 1:2.11+dfsg-1ubuntu6
    • 1:2.11+dfsg-1ubuntu7
    • 1:2.11+dfsg-1ubuntu7.1
    • 1:2.11+dfsg-1ubuntu7.2
    • 1:2.11+dfsg-1ubuntu7.3
    • 1:2.11+dfsg-1ubuntu7.4
    • 1:2.11+dfsg-1ubuntu7.5
    • 1:2.11+dfsg-1ubuntu7.6
    • 1:2.11+dfsg-1ubuntu7.7
    • 1:2.11+dfsg-1ubuntu7.8
    • 1:2.11+dfsg-1ubuntu7.9
    • 1:2.11+dfsg-1ubuntu7.10
    • 1:2.11+dfsg-1ubuntu7.12
    • 1:2.11+dfsg-1ubuntu7.13
    • 1:2.11+dfsg-1ubuntu7.14
    • 1:2.11+dfsg-1ubuntu7.15
    • 1:2.11+dfsg-1ubuntu7.17
    • 1:2.11+dfsg-1ubuntu7.18
    • 1:2.11+dfsg-1ubuntu7.19
    • 1:2.11+dfsg-1ubuntu7.20
    • 1:2.11+dfsg-1ubuntu7.21
    • 1:2.11+dfsg-1ubuntu7.22
    • 1:2.11+dfsg-1ubuntu7.23
    • 1:2.11+dfsg-1ubuntu7.25
    • 1:2.11+dfsg-1ubuntu7.26
    • 1:2.11+dfsg-1ubuntu7.27
    • 1:2.11+dfsg-1ubuntu7.28
    • 1:2.11+dfsg-1ubuntu7.29
    • 1:2.11+dfsg-1ubuntu7.31
    • 1:2.11+dfsg-1ubuntu7.32
    • 1:2.11+dfsg-1ubuntu7.33
    • 1:2.11+dfsg-1ubuntu7.34
    • 1:2.11+dfsg-1ubuntu7.35
    • 1:2.11+dfsg-1ubuntu7.36
    Affected ranges
    • ECOSYSTEM: < 1:2.11+dfsg-1ubuntu7.37

    Update to 1:2.11+dfsg-1ubuntu7.37

  • libslirp Ubuntu:20.04:LTS

    Versions
    • 4.0.0-1
    • 4.0.0-2
    • 4.1.0-1
    • 4.1.0-2
    • 4.1.0-2ubuntu1
    • 4.1.0-2ubuntu2
    • 4.1.0-2ubuntu2.1
    Affected ranges
    • ECOSYSTEM: < 4.1.0-2ubuntu2.2

    Update to 4.1.0-2ubuntu2.2

  • libslirp Ubuntu:22.04:LTS

    Versions
    • 4.4.0-1build1
    Affected ranges
    • ECOSYSTEM: < 4.6.1-1

    Update to 4.6.1-1

Original sources

Check your server →