CVE-2018-18508: Null Pointer Dereference
First published: Tue Jan 22 2019(Updated: )
A NULL pointer dereference issue was found in several CMS function. A specially crafted data could possibly crash nss. External References: <a href="https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.41.1_release_notes">https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.41.1_release_notes</a>
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/nspr | <0:4.21.0-2.el8_0 | 0:4.21.0-2.el8_0 |
| redhat/nss | <0:3.44.0-7.el8_0 | 0:3.44.0-7.el8_0 |
| redhat/nss | <3.41.1 | 3.41.1 |
| Siemens RUGGEDCOM ROX MX5000 | <2.14.0 | 2.14.0 |
| Siemens RUGGEDCOM ROX RX1400 | <2.14.0 | 2.14.0 |
| Siemens RUGGEDCOM ROX RX1500 | <2.14.0 | 2.14.0 |
| Siemens RUGGEDCOM ROX RX1501 | <2.14.0 | 2.14.0 |
| Siemens RUGGEDCOM ROX RX1510 | <2.14.0 | 2.14.0 |
| Siemens RUGGEDCOM ROX RX1511 | <2.14.0 | 2.14.0 |
| Siemens RUGGEDCOM ROX RX500 | <2.14.0 | 2.14.0 |
| Mozilla Network Security Services | <3.36.7 | |
| Mozilla Network Security Services | >=3.41<3.41.1 | |
| Siemens Ruggedcom Rox Mx5000 Firmware | <2.14.0 | |
| Siemens RUGGEDCOM ROX MX5000 | ||
| Siemens Ruggedcom Rox Rx1400 Firmware | <2.14.0 | |
| Siemens RUGGEDCOM ROX RX1400 | ||
| Siemens Ruggedcom Rox Rx1500 Firmware | <2.14.0 | |
| Siemens RUGGEDCOM ROX RX1500 | ||
| Siemens Ruggedcom Rox Rx1501 Firmware | <2.14.0 | |
| Siemens RUGGEDCOM ROX RX1501 | ||
| Siemens Ruggedcom Rox Rx1510 Firmware | <2.14.0 | |
| Siemens RUGGEDCOM ROX RX1510 | ||
| Siemens Ruggedcom Rox Rx1511 Firmware | <2.14.0 | |
| Siemens RUGGEDCOM ROX RX1511 | ||
| Siemens Ruggedcom Rox Rx1512 Firmware | <2.14.0 | |
| Siemens RUGGEDCOM ROX RX1512 | ||
| Siemens Ruggedcom Rox Rx5000 Firmware | <2.14.0 | |
| Siemens Ruggedcom Rox Rx5000 |
Remedy
This issue only affects applications compiled against NSS which use CMS (Cryptographic Message Syntax) API. Other applications are not affected.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2018-18508 https://nvd.nist.gov/vuln/detail/CVE-2018-18508 https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.41.1_release_notes
- https://bugzilla.redhat.com/show_bug.cgi?id=1671310
- https://access.redhat.com/errata/RHSA-2019:1951
- https://access.redhat.com/security/cve/cve-2018-18508
- https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.36.7_release_notes
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.41.1_release_notes
- https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1671311
- https://hg.mozilla.org/projects/nss/rev/08d1b0c1117f
- https://hg.mozilla.org/projects/nss/rev/5e70b72131ac
- https://www.cisa.gov/news-events/ics-advisories/icsa-21-040-04 (Advisory)
Frequently Asked Questions
What is the vulnerability ID of this vulnerability?
The vulnerability ID is CVE-2018-18508.
What is the severity of CVE-2018-18508?
The severity of CVE-2018-18508 is medium with a CVSS score of 6.5.
Which software versions are affected by CVE-2018-18508?
Versions before 3.36.7 and before 3.41.1 of Network Security Services (NSS) are affected by CVE-2018-18508.
How can a malformed signature cause a crash due to a null dereference?
A malformed signature can cause a crash due to a null dereference by exploiting a vulnerability in the Network Security Services (NSS) library.
How can I fix CVE-2018-18508?
To fix CVE-2018-18508, update to version 3.41.1 or later of Network Security Services (NSS).
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