CVE-2020-27638
published 2020-10-22CVE-2020-27638: receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.
PriorityP336high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
2.36%
81.9th percentile
receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | fastd | < fastd 21-1 (bookworm) | fastd 21-1 (bookworm) |
| fastd_project | fastd | < 21.0 | 21.0 |
| fastd_project | fastd | >= 0 < 21-1 | 21-1 |
| fastd_project | fastd | >= 0 < 21-1 | 21-1 |
| fastd_project | fastd | >= 0 < 21-1 | 21-1 |
| fastd_project | fastd | >= 0 < 21-1 | 21-1 |
| fastd_project | fastd | >= 0 < 18-3ubuntu0.1 | 18-3ubuntu0.1 |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_debian7.5HIGH
vendor_ubuntu7.5HIGH
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GHSA
GHSA-5qg6-2968-fxg3: receive
ghsa_unreviewed·2022-05-24
CVE-2020-27638 [HIGH] CWE-119 GHSA-5qg6-2968-fxg3: receive
receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.
OSV
fastd vulnerability
osv·2020-10-29·CVSS 7.5
CVE-2020-27638 [HIGH] fastd vulnerability
fastd vulnerability
It was discovered that fastd did not properly handle receive buffers under
certain circumstances. A remote attacker could possibly use this issue to
cause a memory leak, resulting in a denial of service. (CVE-2020-27638)
OSV
CVE-2020-27638: receive
osv·2020-10-22·CVSS 7.5
CVE-2020-27638 [HIGH] CVE-2020-27638: receive
receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.
Ubuntu
fastd vulnerability
vendor_ubuntu·2021-02-02
CVE-2020-27638 fastd vulnerability
Title: fastd vulnerability
Summary: fastd could be made to denial of service it if received a specially crafted input.
It was discovered that fastd incorrectly handled certain packets.
An attacker could possibly use this issue to cause a denial of service.
Instructions: In general, a standard system update will make all the necessary changes.
Ubuntu
fastd vulnerability
vendor_ubuntu·2020-10-29·CVSS 7.5
CVE-2020-27638 [HIGH] fastd vulnerability
Title: fastd vulnerability
Summary: fastd could be made to remotely exhaust resources if it received specially
crafted packets.
It was discovered that fastd did not properly handle receive buffers under
certain circumstances. A remote attacker could possibly use this issue to
cause a memory leak, resulting in a denial of service. (CVE-2020-27638)
Instructions: In general, a standard system update will make all the necessary changes.
Debian
CVE-2020-27638: fastd - receive.c in fastd before v21 allows denial of service (assertion failure) when ...
vendor_debian·2020·CVSS 7.5
CVE-2020-27638 [HIGH] CVE-2020-27638: fastd - receive.c in fastd before v21 allows denial of service (assertion failure) when ...
receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.
Scope: local
bookworm: resolved (fixed in 21-1)
bullseye: resolved (fixed in 21-1)
forky: resolved (fixed in 21-1)
sid: resolved (fixed in 21-1)
trixie: resolved (fixed in 21-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-27638 fastd: DoS'able memory leak on invalid packets [epel-8]
bugzilla·2020-10-23·CVSS 7.5
CVE-2020-27638 [HIGH] CVE-2020-27638 fastd: DoS'able memory leak on invalid packets [epel-8]
CVE-2020-27638 fastd: DoS'able memory leak on invalid packets [epel-8]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-8.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
Discussion:
Use the following template to for the 'fedpkg upda
Bugzilla
CVE-2020-27638 fastd: DoS'able memory leak on invalid packets
bugzilla·2020-10-23·CVSS 7.5
CVE-2020-27638 [HIGH] CVE-2020-27638 fastd: DoS'able memory leak on invalid packets
CVE-2020-27638 fastd: DoS'able memory leak on invalid packets
receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.
References:
https://bugs.debian.org/972521
https://fastd.readthedocs.io/en/stable/releases/v21.html
https://github.com/NeoRaider/fastd/commit/737925113363b6130879729cdff9ccc46c33eaea
Discussion:
Created fastd tracking bugs for this issue:
Affects: epel-7 [bug 1890969]
Affects: epel-8 [bug 1890970]
Affects: fedora-all [bug 1890968]
---
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
Bugzilla
CVE-2020-27638 fastd: DoS'able memory leak on invalid packets [epel-7]
bugzilla·2020-10-23·CVSS 7.5
CVE-2020-27638 [HIGH] CVE-2020-27638 fastd: DoS'able memory leak on invalid packets [epel-7]
CVE-2020-27638 fastd: DoS'able memory leak on invalid packets [epel-7]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-7.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
Discussion:
Use the following template to for the 'fedpkg upda
Bugzilla
CVE-2020-27638 fastd: DoS'able memory leak on invalid packets [fedora-all]
bugzilla·2020-10-23·CVSS 7.5
CVE-2020-27638 [HIGH] CVE-2020-27638 fastd: DoS'able memory leak on invalid packets [fedora-all]
CVE-2020-27638 fastd: DoS'able memory leak on invalid packets [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions of
https://bugs.debian.org/972521https://fastd.readthedocs.io/en/stable/releases/v21.htmlhttps://github.com/NeoRaider/fastd/commit/737925113363b6130879729cdff9ccc46c33eaeahttps://lists.debian.org/debian-lts-announce/2020/10/msg00025.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D2LNSF2LI4RQ7BVGHTJQUJWP7RVGHDTK/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUZ3AGTAXH7OOP45F5WXBVRQ3IDWUR7M/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSMH65GHKHMJAK2VMPROIPIUS4IA63CW/https://bugs.debian.org/972521https://fastd.readthedocs.io/en/stable/releases/v21.htmlhttps://github.com/NeoRaider/fastd/commit/737925113363b6130879729cdff9ccc46c33eaeahttps://lists.debian.org/debian-lts-announce/2020/10/msg00025.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D2LNSF2LI4RQ7BVGHTJQUJWP7RVGHDTK/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUZ3AGTAXH7OOP45F5WXBVRQ3IDWUR7M/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSMH65GHKHMJAK2VMPROIPIUS4IA63CW/
2020-10-22
Published