CVE-2019-11500: debian debian_linux Out-of-bounds Write
CVSS: 9.8v3.0CriticalModified
AliasesALPINE-CVE-2019-11500MGASA-2019-0261SUSE-SU-2019:2454-1RHSA-2019:2822RHSA-2019:2836RHSA-2019:2885UBUNTU-CVE-2019-11500USN-4110-1USN-4110-2USN-4110-3USN-4110-4DEBIAN-CVE-2019-11500DLA-1901-1DSA-4510-1
Published 29-08-2019Last modified 04-08-2024
Vulnerability summary
CVE-2019-11500 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 62.32% chance of exploitation in the next 30 days, higher than 99.1% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.8/10
010
Critical · v3.0 (NVD)EPSS score
62.32%
0%100%
Critical · -0.25 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 5 · Related 5Timeline
- 29-08-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
In Dovecot before 2.2.36.4 and 2.3.x before 2.3.7.2 (and Pigeonhole before 0.5.7.2), protocol processing can fail for quoted strings. This occurs because '\0' characters are mishandled, and can lead to out-of-bounds writes and remote code execution.
CVSS metrics
6 scores · 5 sources · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSources5 sources · 8.1–9.8
- OSV · AlpineEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · Red hatEcosystem advisory · calculated8.1HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
62.32%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
-0.25 pp
From 62.58% on 20-09-2026
20-09-202620-10-2026
EPSS score62.32%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (openwall.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Suse20 products
- dovecot22&distro=HPE Helion OpenStack 8< 2.2.31-19.17.1
- dovecot22&distro=SUSE Enterprise Storage 4< 2.2.31-19.17.1
- dovecot22&distro=SUSE Enterprise Storage 5< 2.2.31-19.17.1
- dovecot22&distro=SUSE Linux Enterprise Server 12 SP1-LTSS< 2.2.31-19.17.1
- dovecot22&distro=SUSE Linux Enterprise Server 12 SP2-BCL< 2.2.31-19.17.1
Redhat10 products
- dovecot< 1:2.2.36-5.el8_0.1 | < 1:2.2.36-3.el7_7.1 | < 1:2.0.9-22.el6_10.1
- dovecot-debuginfo< 1:2.2.36-5.el8_0.1 | < 1:2.2.36-3.el7_7.1 | < 1:2.0.9-22.el6_10.1
- dovecot-debugsource< 1:2.2.36-5.el8_0.1
- dovecot-devel< 1:2.2.36-5.el8_0.1 | < 1:2.2.36-3.el7_7.1 | < 1:2.0.9-22.el6_10.1
- dovecot-mysql< 1:2.2.36-5.el8_0.1 | < 1:2.2.36-3.el7_7.1 | < 1:2.0.9-22.el6_10.1
Debian2 products
- dovecot< 1:2.3.7.2-1 | < 1:2.2.27-3+deb9u5 | < 1:2.3.4.1-5+deb10u1 | < 1:2.2.13-12~deb8u7
- debian_linuxEOL8.0
Dovecot2 products
- dovecot< 2.2.36.4 | ≥ 2.3.0, < 2.3.7.2
- pigeonhole< 0.5.7.2
Mageia2 products
- dovecot< 2.2.36.4-1.mga6
- dovecot< 2.3.7.2-1.mga7
Alpine1 product
- dovecot≥ 2.3.0, < 2.3.7.2-r0 | ≥ 2.3.0, < 2.2.36.4-r0
Fedoraproject1 product
- fedoraEOL30
Ubuntu1 product
- dovecot< 1:2.2.22-1ubuntu2.11 | < 1:2.2.33.2-1ubuntu4.4 | < 1:2.2.9-1ubuntu2.6+esm1 | < 1:2.2.22-1ubuntu2.12 | < 1:2.2.33.2-1ubuntu4.5 | < 1:2.2.9-1ubuntu2.6+esm2
8 vendors · 39 products
References
35 links- www.openwall.com/lists/oss-security/2019/08/28/3X Refsource CONFIRMExploitMailing ListThird Party Advisory
lists.debian.org/debian-lts-announce/2019/08/msg00035.htmlMailing ListX Refsource MLISTThird Party Advisory
