Buffer overflow in Apache Bookkeeper
CVE-2019-19906
cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds write leading to unauthenticated remote denial-of-service in OpenLDAP via a malformed LDAP packet. The OpenLDAP crash is ultimately caused by an off-by-one error in _sasl_add_string in common.c in cyrus-sasl.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.080 (94.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.080 · newest: 0.080 · change: 0.000
Affected products
- Apache Bookkeeper — versions 4.12.1
- Apple Ipados — versions 13.6
- Apple Iphone OS — versions 13.6
- Apple Mac OS X — versions 10.14.6, 10.13.6
- Cyrusimap Cyrus-Sasl
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Centos — versions 7.0
- Debian Linux — versions 8.0, 9.0, 10.0
- Fedoraproject Fedora — versions 31, 32
- Red Hat Enterprise Linux — versions 5.0, 6.0, 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/cyrusimap/cyrus-sasl/issues/587 (Patch, Third Party Advisory)
- www.openldap.org/its/index.cgi/Incoming (Exploit, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/12/msg00027.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2019/dsa-4591 (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2019/Dec/42 (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4256-1/ (vendor-advisory, Patch, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- support.apple.com/kb/HT211288 (Third Party Advisory)
- support.apple.com/kb/HT211289 (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-19906?
- CVE-2019-19906 is a high-severity vulnerability in Apache Bookkeeper, classified under Off-by-one Error. CVSS score: 7.5/10. Published 2019-12-19.
- How severe is CVE-2019-19906?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-19906 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.