Vulnerability · Published Oct 20, 2020 · Assigned by redhat
CVE-2020-25648
High 7.5
In plain English
A high-severity resource allocation without limits in nss. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.5% (higher than 89% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)3.5%top 10.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3. This flaw allows a remote attacker to send multiple CCS messages, causing a denial of service for servers compiled with the NSS library. The highest threat from this vulnerability is to system availability. This flaw affects NSS versions before 3.58.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | nspr | 4.32.0-1.el8_4 | ALSA-2021:3572 |
| AlmaLinux:8 | nspr-devel | 4.32.0-1.el8_4 | ALSA-2021:3572 |
| AlmaLinux:8 | nss | 3.67.0-6.el8_4 | ALSA-2021:3572 |
| AlmaLinux:8 | nss-devel | 3.67.0-6.el8_4 | ALSA-2021:3572 |
| AlmaLinux:8 | nss-softokn | 3.67.0-6.el8_4 | ALSA-2021:3572 |
| AlmaLinux:8 | nss-softokn-devel | 3.67.0-6.el8_4 | ALSA-2021:3572 |
| AlmaLinux:8 | nss-softokn-freebl | 3.67.0-6.el8_4 | ALSA-2021:3572 |
| AlmaLinux:8 | nss-softokn-freebl-devel | 3.67.0-6.el8_4 | ALSA-2021:3572 |
| AlmaLinux:8 | nss-sysinit | 3.67.0-6.el8_4 | ALSA-2021:3572 |
| AlmaLinux:8 | nss-tools | 3.67.0-6.el8_4 | ALSA-2021:3572 |
| AlmaLinux:8 | nss-util | 3.67.0-6.el8_4 | ALSA-2021:3572 |
| AlmaLinux:8 | nss-util-devel | 3.67.0-6.el8_4 | ALSA-2021:3572 |
| Alpine:v3.20 | nss | 3.58-r0 | ALPINE-CVE-2020-25648 |
| Alpine:v3.21 | nss | 3.58-r0 | ALPINE-CVE-2020-25648 |
| Alpine:v3.22 | nss | 3.58-r0 | ALPINE-CVE-2020-25648 |
| Alpine:v3.23 | nss | 3.58-r0 | ALPINE-CVE-2020-25648 |
| Alpine:v3.24 | nss | 3.58-r0 | ALPINE-CVE-2020-25648 |
| Debian:12 | nss | 2:3.58-1 | DEBIAN-CVE-2020-25648 |
| Debian:13 | nss | 2:3.58-1 | DEBIAN-CVE-2020-25648 |
| Debian:14 | nss | 2:3.58-1 | DEBIAN-CVE-2020-25648 |
| Rocky Linux:8 | nspr | 0:4.32.0-1.el8_4 | RLSA-2021:3572 |
| Rocky Linux:8 | nss | 0:3.67.0-6.el8_4 | RLSA-2021:3572 |
Affected products (as reported)
Weakness: CWE-770
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1887319
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.58_release_notes
- FEDORA-2020-f29254bd5e vendor-advisory
- FEDORA-2020-bb91bf9b8e vendor-advisory
- FEDORA-2020-a857113c7a vendor-advisory
- [mina-dev] 20210225 [jira] [Created] (FTPSERVER-500) Security vulnerability in common/lib/log4j-1.2.17.jar mailing-list
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- [debian-lts-announce] 20231028 [SECURITY] [DLA 3634-1] nss security update mailing-list