CVE-2019-8955
published 2019-02-21CVE-2019-8955: In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4.x before 0.4.0.2-alpha, remote denial of service against Tor clients and…
PriorityP336high7.5CVSS 3.0
AVNACLPRNUINSUCNINAH
EPSS
4.57%
90.6th percentile
In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4.x before 0.4.0.2-alpha, remote denial of service against Tor clients and relays can occur via memory exhaustion in the KIST cell scheduler.
Affected
28 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | tor | < tor 0.3.5.8-1 (bookworm) | tor 0.3.5.8-1 (bookworm) |
| torproject | tor | < 0.3.3.12 | 0.3.3.12 |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | — | — |
| torproject | tor | >= 0 < 0.3.5.8-1 | 0.3.5.8-1 |
| torproject | tor | >= 0 < 0.3.5.8-1 | 0.3.5.8-1 |
| torproject | tor | >= 0 < 0.3.5.8-1 | 0.3.5.8-1 |
| torproject | tor | >= 0 < 0.3.5.8-1 | 0.3.5.8-1 |
| torproject | tor | >= 0 < 0.2.4.27-1ubuntu0.1+esm2 | 0.2.4.27-1ubuntu0.1+esm2 |
| torproject | tor | >= 0 < 0.2.9.14-1ubuntu1~16.04.3+esm1 | 0.2.9.14-1ubuntu1~16.04.3+esm1 |
CVSS provenance
nvdv3.07.5HIGHCVSS:3.0/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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OSV
tor vulnerabilities
osv·2022-10-04·CVSS 7.5
CVE-2019-8955 [HIGH] tor vulnerabilities
tor vulnerabilities
It was discovered that Tor incorrectly handled certain memory operations. A
remote attacker could use this issue to cause a denial of service. This issue
only affected Ubuntu 18.04 ESM. (CVE-2019-8955)
It was discovered that Tor did not properly handle the input length to
dump_desc() function. A remote attacker could use this issue to cause a denial
of service. This issue only affected Ubuntu 16.04 ESM, Ubuntu 18.04 ESM and
Ubuntu 20.04 ESM. (CVE-2021-28089)
It was discovered that Tor did not properly sanitize the relay nickname in
dirvote_add_signatures_to_pending_consensus() function. An attacker could
possibly use this issue to cause an assertion failure and then cause a denial
of service. (CVE-2021-28090)
It was discovered that Tor did not properly validate the
GHSA
GHSA-h3x5-p32h-w7q2: In Tor before 0
ghsa_unreviewed·2022-05-13
CVE-2019-8955 [HIGH] CWE-770 GHSA-h3x5-p32h-w7q2: In Tor before 0
In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4.x before 0.4.0.2-alpha, remote denial of service against Tor clients and relays can occur via memory exhaustion in the KIST cell scheduler.
OSV
CVE-2019-8955: In Tor before 0
osv·2019-02-21·CVSS 7.5
CVE-2019-8955 [HIGH] CVE-2019-8955: In Tor before 0
In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4.x before 0.4.0.2-alpha, remote denial of service against Tor clients and relays can occur via memory exhaustion in the KIST cell scheduler.
Ubuntu
Tor vulnerabilities
vendor_ubuntu·2022-10-04·CVSS 7.5
CVE-2021-34550 [HIGH] Tor vulnerabilities
Title: Tor vulnerabilities
Summary: Several security issues were fixed in Tor.
It was discovered that Tor incorrectly handled certain memory operations. A
remote attacker could use this issue to cause a denial of service. This issue
only affected Ubuntu 18.04 ESM. (CVE-2019-8955)
It was discovered that Tor did not properly handle the input length to
dump_desc() function. A remote attacker could use this issue to cause a denial
of service. This issue only affected Ubuntu 16.04 ESM, Ubuntu 18.04 ESM and
Ubuntu 20.04 ESM. (CVE-2021-28089)
It was discovered that Tor did not properly sanitize the relay nickname in
dirvote_add_signatures_to_pending_consensus() function. An attacker could
possibly use this issue to cause an assertion failure and then cause a denial
of service. (CVE-2021-28090
Debian
CVE-2019-8955: tor - In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4...
vendor_debian·2019·CVSS 7.5
CVE-2019-8955 [HIGH] CVE-2019-8955: tor - In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4...
In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4.x before 0.4.0.2-alpha, remote denial of service against Tor clients and relays can occur via memory exhaustion in the KIST cell scheduler.
Scope: local
bookworm: resolved (fixed in 0.3.5.8-1)
bullseye: resolved (fixed in 0.3.5.8-1)
forky: resolved (fixed in 0.3.5.8-1)
sid: resolved (fixed in 0.3.5.8-1)
trixie: resolved (fixed in 0.3.5.8-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-8955 tor: memory exhaustion in the KIST cell scheduler resulting in denial of service
bugzilla·2019-02-22·CVSS 7.5
CVE-2019-8955 [HIGH] CVE-2019-8955 tor: memory exhaustion in the KIST cell scheduler resulting in denial of service
CVE-2019-8955 tor: memory exhaustion in the KIST cell scheduler resulting in denial of service
In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4.x before 0.4.0.2-alpha, remote denial of service against Tor clients and relays can occur via memory exhaustion in the KIST cell scheduler.
References:
https://blog.torproject.org/new-releases-tor-0402-alpha-0358-03411-and-03312
https://trac.torproject.org/projects/tor/ticket/29168
Discussion:
Created tor tracking bugs for this issue:
Affects: fedora-all [bug 1679976]
---
Created tor tracking bugs for this issue:
Affects: epel-7 [bug 1679977]
---
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
Bugzilla
CVE-2019-8955 tor: memory exhaustion in the KIST cell scheduler resulting in denial of service [fedora-all]
bugzilla·2019-02-22·CVSS 7.5
CVE-2019-8955 [HIGH] CVE-2019-8955 tor: memory exhaustion in the KIST cell scheduler resulting in denial of service [fedora-all]
CVE-2019-8955 tor: memory exhaustion in the KIST cell scheduler resulting in denial of service [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 affec
Bugzilla
CVE-2019-8955 tor: memory exhaustion in the KIST cell scheduler resulting in denial of service [epel-7]
bugzilla·2019-02-22·CVSS 7.5
CVE-2019-8955 [HIGH] CVE-2019-8955 tor: memory exhaustion in the KIST cell scheduler resulting in denial of service [epel-7]
CVE-2019-8955 tor: memory exhaustion in the KIST cell scheduler resulting in denial of service [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
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00013.htmlhttp://www.securityfocus.com/bid/107136https://blog.torproject.org/new-releases-tor-0402-alpha-0358-03411-and-03312https://trac.torproject.org/projects/tor/ticket/29168http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00013.htmlhttp://www.securityfocus.com/bid/107136https://blog.torproject.org/new-releases-tor-0402-alpha-0358-03411-and-03312https://trac.torproject.org/projects/tor/ticket/29168
2019-02-21
Published