CVE-2020-16127
published 2020-11-11CVE-2020-16127: An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, would perform unbounded read operations…
PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.41%
33.1th percentile
An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, would perform unbounded read operations on user-controlled ~/.pam_environment files, allowing an infinite loop if /dev/zero is symlinked to this location.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | accountsservice | >= 0 < 0.6.40-2ubuntu11.6 | 0.6.40-2ubuntu11.6 |
| canonical | accountsservice | >= 0 < 0.6.45-1ubuntu1.3 | 0.6.45-1ubuntu1.3 |
| canonical | accountsservice | >= 0 < 0.6.55-0ubuntu12~20.04.4 | 0.6.55-0ubuntu12~20.04.4 |
| debian | accountsservice | — | — |
| freedesktop | accountsservice | < 0.6.55 | 0.6.55 |
| freedesktop | accountsservice | >= 0.6.35-0ubuntu7.3 < 0.6.35-0ubuntu7.3+esm2 | 0.6.35-0ubuntu7.3+esm2 |
| freedesktop | accountsservice | >= 0.6.40-2ubuntu11 < 0.6.40-2ubuntu11.6 | 0.6.40-2ubuntu11.6 |
| freedesktop | accountsservice | >= 0.6.45-1ubuntu1 < 0.6.45-1ubuntu1.3 | 0.6.45-1ubuntu1.3 |
| freedesktop | accountsservice | >= 0.6.55-0ubuntu < 0.6.55-0ubuntu12~20.04.4 | 0.6.55-0ubuntu12~20.04.4 |
| freedesktop | accountsservice | >= 0.6.55-0ubuntu13 < 0.6.55-0ubuntu13.2 | 0.6.55-0ubuntu13.2 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:N/I:N/A:P
osv6.5MEDIUM
vendor_ubuntu6.5MEDIUM
vendor_debian2.8LOW
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GHSA
GHSA-vg2p-x98m-7mxr: An Ubuntu-specific modification to AccountsService in versions before 0
ghsa_unreviewed·2022-05-24
CVE-2020-16127 [MEDIUM] CWE-835 GHSA-vg2p-x98m-7mxr: An Ubuntu-specific modification to AccountsService in versions before 0
An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, would perform unbounded read operations on user-controlled ~/.pam_environment files, allowing an infinite loop if /dev/zero is symlinked to this location.
OSV
accountsservice vulnerabilities
osv·2020-11-03·CVSS 6.5
CVE-2020-16126 [MEDIUM] accountsservice vulnerabilities
accountsservice vulnerabilities
Kevin Backhouse discovered that AccountsService incorrectly dropped
privileges. A local user could possibly use this issue to cause
AccountsService to crash or hang, resulting in a denial of service.
(CVE-2020-16126)
Kevin Backhouse discovered that AccountsService incorrectly handled reading
.pam_environment files. A local user could possibly use this issue to cause
AccountsService to crash or hang, resulting in a denial of service. This
issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10. (CVE-2020-16127)
Matthias Gerstner discovered that AccountsService incorrectly handled
certain path checks. A local attacker could possibly use this issue to
read arbitrary files. This issue only affected Ubuntu 16.04 LTS and Ubuntu
18.04 LTS. (CVE-2018-14036)
OSV
CVE-2020-16127: An Ubuntu-specific modification to AccountsService in versions before 0
osv·2020-11-03·CVSS 5.5
CVE-2020-16127 [MEDIUM] CVE-2020-16127: An Ubuntu-specific modification to AccountsService in versions before 0
An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, would perform unbounded read operations on user-controlled ~/.pam_environment files, allowing an infinite loop if /dev/zero is symlinked to this location.
Ubuntu
AccountsService vulnerabilities
vendor_ubuntu·2020-11-03·CVSS 6.5
CVE-2020-16126 [MEDIUM] AccountsService vulnerabilities
Title: AccountsService vulnerabilities
Summary: Several security issues were fixed in AccountsService.
Kevin Backhouse discovered that AccountsService incorrectly dropped
privileges. A local user could possibly use this issue to cause
AccountsService to crash or hang, resulting in a denial of service.
(CVE-2020-16126)
Kevin Backhouse discovered that AccountsService incorrectly handled reading
.pam_environment files. A local user could possibly use this issue to cause
AccountsService to crash or hang, resulting in a denial of service. This
issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10. (CVE-2020-16127)
Matthias Gerstner discovered that AccountsService incorrectly handled
certain path checks. A local attacker could possibly use this issue to
read arbitrary files. This issue only
Debian
CVE-2020-16127: accountsservice - An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ub...
vendor_debian·2020·CVSS 2.8
CVE-2020-16127 [LOW] CVE-2020-16127: accountsservice - An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ub...
An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, would perform unbounded read operations on user-controlled ~/.pam_environment files, allowing an infinite loop if /dev/zero is symlinked to this location.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved
sid: resolved
trixie: resolved
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2020-11-11
Published