CVE-2019-14867
published 2019-11-27CVE-2019-14867: A flaw was found in IPA, all 4.6.x versions before 4.6.7, all 4.7.x versions before 4.7.4 and all 4.8.x versions before 4.8.3, in the way the internal function…
PriorityP356high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
6.33%
92.9th percentile
A flaw was found in IPA, all 4.6.x versions before 4.6.7, all 4.7.x versions before 4.7.4 and all 4.8.x versions before 4.8.3, in the way the internal function ber_scanf() was used in some components of the IPA server, which parsed kerberos key data. An unauthenticated attacker who could trigger parsing of the krb principal key could cause the IPA server to crash or in some conditions, cause arbitrary code to be executed on the server hosting the IPA server.
Affected
18 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | freeipa | < freeipa 4.8.3-1 (bookworm) | freeipa 4.8.3-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| freeipa | freeipa | >= 0 < 4.8.3-1 | 4.8.3-1 |
| freeipa | freeipa | >= 0 < 4.8.3-1 | 4.8.3-1 |
| freeipa | freeipa | >= 0 < 4.8.3-1 | 4.8.3-1 |
| freeipa | freeipa | >= 4.6.0 < 4.6.7 | 4.6.7 |
| freeipa | freeipa | >= 4.6.2 < 4.6.7 | 4.6.7 |
| freeipa | freeipa | >= 4.7.0 < 4.7.4 | 4.7.4 |
| freeipa | freeipa | >= 4.7.0 < 4.7.4 | 4.7.4 |
| freeipa | freeipa | >= 4.8.0 < 4.8.3 | 4.8.3 |
| freeipa | freeipa | >= 4.8.0 < 4.8.3 | 4.8.3 |
| red_hat | ipa | — | — |
| red_hat | ipa | — | — |
| red_hat | ipa | — | — |
| red_hat | ipa | >= 4.6.2 < 4.6.7 | 4.6.7 |
| red_hat | ipa | >= 4.7.0 < 4.7.4 | 4.7.4 |
| red_hat | ipa | >= 4.8.0 < 4.8.3 | 4.8.3 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv3.08.8HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
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Red Hat
ipa: Denial of service in IPA server due to wrong use of ber_scanf()
vendor_redhat·2019-08-26·CVSS 8.8
CVE-2019-14867 [HIGH] CWE-134 ipa: Denial of service in IPA server due to wrong use of ber_scanf()
ipa: Denial of service in IPA server due to wrong use of ber_scanf()
A flaw was found in IPA, all 4.6.x versions before 4.6.7, all 4.7.x versions before 4.7.4 and all 4.8.x versions before 4.8.3, in the way the internal function ber_scanf() was used in some components of the IPA server, which parsed kerberos key data. An unauthenticated attacker who could trigger parsing of the krb principal key could cause the IPA server to crash or in some conditions, cause arbitrary code to be executed on the server hosting the IPA server.
A flaw was found in the way the internal function ber_scanf() was used in some components of the IPA server, which parsed kerberos key data. An unauthenticated attacker who could trigger parsing of the krb principal key could cause the IPA server to crash or in some
Debian
CVE-2019-14867: freeipa - A flaw was found in IPA, all 4.6.x versions before 4.6.7, all 4.7.x versions bef...
vendor_debian·2019·CVSS 8.8
CVE-2019-14867 [HIGH] CVE-2019-14867: freeipa - A flaw was found in IPA, all 4.6.x versions before 4.6.7, all 4.7.x versions bef...
A flaw was found in IPA, all 4.6.x versions before 4.6.7, all 4.7.x versions before 4.7.4 and all 4.8.x versions before 4.8.3, in the way the internal function ber_scanf() was used in some components of the IPA server, which parsed kerberos key data. An unauthenticated attacker who could trigger parsing of the krb principal key could cause the IPA server to crash or in some conditions, cause arbitrary code to be executed on the server hosting the IPA server.
Scope: local
bookworm: resolved (fixed in 4.8.3-1)
forky: resolved (fixed in 4.8.3-1)
sid: resolved (fixed in 4.8.3-1)
trixie: resolved (fixed in 4.8.3-1)
OSV
Code injection in FreeIPA
osv·2021-12-06
CVE-2019-14867 [HIGH] Code injection in FreeIPA
Code injection in FreeIPA
A flaw was found in IPA, all 4.6.x versions before 4.6.7, all 4.7.x versions before 4.7.4 and all 4.8.x versions before 4.8.3, in the way the internal function ber_scanf() was used in some components of the IPA server, which parsed kerberos key data. An unauthenticated attacker who could trigger parsing of the krb principal key could cause the IPA server to crash or in some conditions, cause arbitrary code to be executed on the server hosting the IPA server.
GHSA
Code injection in FreeIPA
ghsa·2021-12-06
CVE-2019-14867 [HIGH] CWE-400 Code injection in FreeIPA
Code injection in FreeIPA
A flaw was found in IPA, all 4.6.x versions before 4.6.7, all 4.7.x versions before 4.7.4 and all 4.8.x versions before 4.8.3, in the way the internal function ber_scanf() was used in some components of the IPA server, which parsed kerberos key data. An unauthenticated attacker who could trigger parsing of the krb principal key could cause the IPA server to crash or in some conditions, cause arbitrary code to be executed on the server hosting the IPA server.
OSV
CVE-2019-14867: A flaw was found in IPA, all 4
osv·2019-11-27·CVSS 8.8
CVE-2019-14867 [HIGH] CVE-2019-14867: A flaw was found in IPA, all 4
A flaw was found in IPA, all 4.6.x versions before 4.6.7, all 4.7.x versions before 4.7.4 and all 4.8.x versions before 4.8.3, in the way the internal function ber_scanf() was used in some components of the IPA server, which parsed kerberos key data. An unauthenticated attacker who could trigger parsing of the krb principal key could cause the IPA server to crash or in some conditions, cause arbitrary code to be executed on the server hosting the IPA server.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-14867 freeipa: ipa: Denial of service in IPA server due to wrong use of ber_scanf() [fedora-all]
bugzilla·2019-11-27·CVSS 8.8
CVE-2019-14867 [HIGH] CVE-2019-14867 freeipa: ipa: Denial of service in IPA server due to wrong use of ber_scanf() [fedora-all]
CVE-2019-14867 freeipa: ipa: Denial of service in IPA server due to wrong use of ber_scanf() [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
Bugzilla
CVE-2019-14867 ipa: Denial of service in IPA server due to wrong use of ber_scanf()
bugzilla·2019-10-30·CVSS 8.8
CVE-2019-14867 [HIGH] CVE-2019-14867 ipa: Denial of service in IPA server due to wrong use of ber_scanf()
CVE-2019-14867 ipa: Denial of service in IPA server due to wrong use of ber_scanf()
A flaw was found in the way the internal function ber_scanf() was used in some components of the IPA server which parsed kerberos key data. An unauthenticated attacker who could trigger parsing of the krb principal key, could cause the IPA server to crash or in some conditions cause arbitrary code to be executed on the server hosting the IPA server.
Discussion:
Technical details and analysis:
in ber_decode_krb5_key_data(), there is a call to ber_scanf to skip over unsupported sk2params:
if (retag == (LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 2)) {
/* not supported yet, skip */
retag = ber_scanf(be, "t[x]}");
} else {
This 'ber_scanf' call is missing a '&tag' argument, meaning that it ends up overwriting
https://access.redhat.com/errata/RHBA-2019:4268https://access.redhat.com/errata/RHSA-2020:0378https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14867https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/67SEUWJAJ5RMH5K4Q6TS2I7HIMXUGNKF/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLFL5XDCJ3WT6JCLCQVKHZBLHGW7PW4T/https://www.freeipa.org/page/Releases/4.6.7https://www.freeipa.org/page/Releases/4.7.4https://www.freeipa.org/page/Releases/4.8.3https://access.redhat.com/errata/RHBA-2019:4268https://access.redhat.com/errata/RHSA-2020:0378https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14867https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/67SEUWJAJ5RMH5K4Q6TS2I7HIMXUGNKF/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLFL5XDCJ3WT6JCLCQVKHZBLHGW7PW4T/https://www.freeipa.org/page/Releases/4.6.7https://www.freeipa.org/page/Releases/4.7.4https://www.freeipa.org/page/Releases/4.8.3
2019-11-27
Published