Vulnerability · Published May 20, 2021 · Assigned by redhat
CVE-2021-3480
High 7.5
In plain English
A high-severity null pointer dereference in slapi-nis. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.7%top 22.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A flaw was found in slapi-nis in versions before 0.56.7. A NULL pointer dereference during the parsing of the Binding DN could allow an unauthenticated attacker to crash the 389-ds-base directory server. The highest threat from this vulnerability is to system availability.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bind-dyndb-ldap | 11.6-2.module_el8.5.0+2603+92118e57 | ALSA-2021:1983 |
| AlmaLinux:8 | custodia | 0.6.0-3.module_el8.6.0+2881+2f24dc92 | ALSA-2021:1983 |
| AlmaLinux:8 | custodia | 0.6.0-3.module_el8.5.0+2603+92118e57 | ALSA-2021:1983 |
| AlmaLinux:8 | opendnssec | 2.1.7-1.module_el8.6.0+2881+2f24dc92 | ALSA-2021:1983 |
| AlmaLinux:8 | opendnssec | 2.1.7-1.module_el8.5.0+2603+92118e57 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-custodia | 0.6.0-3.module_el8.6.0+2881+2f24dc92 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-custodia | 0.6.0-3.module_el8.5.0+2603+92118e57 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-jwcrypto | 0.5.0-1.module_el8.5.0+2603+92118e57 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-jwcrypto | 0.5.0-1.module_el8.6.0+2881+2f24dc92 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-jwcrypto | 0.5.0-1.module_el8.6.0+2737+7e73ea90 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-kdcproxy | 0.4-5.module_el8.5.0+2603+92118e57 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-kdcproxy | 0.4-5.module_el8.6.0+2881+2f24dc92 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-pyusb | 1.0.0-9.module_el8.5.0+2603+92118e57 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-pyusb | 1.0.0-9.module_el8.6.0+2881+2f24dc92 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-pyusb | 1.0.0-9.module_el8.6.0+2737+7e73ea90 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-qrcode | 5.1-12.module_el8.5.0+2603+92118e57 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-qrcode | 5.1-12.module_el8.6.0+2881+2f24dc92 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-qrcode | 5.1-12.module_el8.6.0+2737+7e73ea90 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-qrcode-core | 5.1-12.module_el8.6.0+2737+7e73ea90 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-qrcode-core | 5.1-12.module_el8.5.0+2603+92118e57 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-qrcode-core | 5.1-12.module_el8.6.0+2881+2f24dc92 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-yubico | 1.3.2-9.module_el8.6.0+2737+7e73ea90 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-yubico | 1.3.2-9.module_el8.6.0+2881+2f24dc92 | ALSA-2021:1983 |
| AlmaLinux:8 | python3-yubico | 1.3.2-9.module_el8.5.0+2603+92118e57 | ALSA-2021:1983 |
| AlmaLinux:8 | softhsm | 2.6.0-5.module_el8.5.0+2603+92118e57 | ALSA-2021:1983 |
| AlmaLinux:8 | softhsm | 2.6.0-5.module_el8.6.0+2881+2f24dc92 | ALSA-2021:1983 |
| AlmaLinux:8 | softhsm-devel | 2.6.0-5.module_el8.6.0+2881+2f24dc92 | ALSA-2021:1983 |
| AlmaLinux:8 | softhsm-devel | 2.6.0-5.module_el8.5.0+2603+92118e57 | ALSA-2021:1983 |
| Debian:12 | slapi-nis | 0.56.5-2 | DEBIAN-CVE-2021-3480 |
| Debian:13 | slapi-nis | 0.56.5-2 | DEBIAN-CVE-2021-3480 |
| Rocky Linux:8 | bind-dyndb-ldap | 0:11.6-2.module+el8.4.0+429+6bd33fea | RLSA-2021:1983 |
| Rocky Linux:8 | custodia | 0:0.6.0-3.module+el8.4.0+429+6bd33fea | RLSA-2021:1983 |
| Rocky Linux:8 | ipa | 0:4.9.2-3.module+el8.4.0+429+6bd33fea | RLSA-2021:1983 |
| Rocky Linux:8 | ipa-healthcheck | 0:0.7-3.module+el8.4.0+429+6bd33fea | RLSA-2021:1983 |
| Rocky Linux:8 | opendnssec | 0:2.1.7-1.module+el8.4.0+429+6bd33fea | RLSA-2021:1983 |
| Rocky Linux:8 | python-jwcrypto | 0:0.5.0-1.module+el8.4.0+429+6bd33fea | RLSA-2021:1983 |
| Rocky Linux:8 | python-jwcrypto | 0:0.5.0-1.1.module+el8.7.0+1074+aae18f3a | RLSA-2021:1983 |
| Rocky Linux:8 | python-kdcproxy | 0:0.4-5.module+el8.3.0+244+0b2ae752 | RLSA-2021:1983 |
| Rocky Linux:8 | python-qrcode | 0:5.1-12.module+el8.4.0+429+6bd33fea | RLSA-2021:1983 |
| Rocky Linux:8 | python-yubico | 0:1.3.2-9.module+el8.4.0+429+6bd33fea | RLSA-2021:1983 |
| Rocky Linux:8 | python-yubico | 0:1.3.2-9.1.module+el8.7.0+1074+aae18f3a | RLSA-2021:1983 |
| Rocky Linux:8 | pyusb | 0:1.0.0-9.1.module+el8.7.0+1074+aae18f3a | RLSA-2021:1983 |
| Rocky Linux:8 | pyusb | 0:1.0.0-9.module+el8.4.0+429+6bd33fea | RLSA-2021:1983 |
| Rocky Linux:8 | slapi-nis | 0:0.56.6-2.module+el8.4.0+429+6bd33fea | RLSA-2021:1983 |
| Rocky Linux:8 | softhsm | 0:2.6.0-5.module+el8.4.0+429+6bd33fea | RLSA-2021:1983 |
| Ubuntu:22.04:LTS | slapi-nis | no fix listed | UBUNTU-CVE-2021-3480 |
| Ubuntu:24.04:LTS | slapi-nis | no fix listed | UBUNTU-CVE-2021-3480 |
| Ubuntu:25.10 | slapi-nis | no fix listed | UBUNTU-CVE-2021-3480 |
| Ubuntu:26.04:LTS | slapi-nis | no fix listed | UBUNTU-CVE-2021-3480 |
Affected products (as reported)
Weakness: CWE-476
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1944640 x_refsource_MISC
- FEDORA-2021-f93243d461 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-a4ee3426c4 vendor-advisory, x_refsource_FEDORA