CVE-2019-12527: canonical ubuntu_linux Out-of-bounds Write
CVSS: 8.8v3.1HighModified
AliasesRHSA-2019:2593DEBIAN-CVE-2019-12527
Published 11-07-2019Last modified 04-08-2024
Vulnerability summary
CVE-2019-12527 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in canonical ubuntu_linux. EPSS estimates a 49.04% chance of exploitation in the next 30 days, higher than 98.8% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (NVD)EPSS score
49.04%
0%100%
High · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 6 · Related 4Timeline
- 11-07-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in Squid 4.0.23 through 4.7. When checking Basic Authentication with HttpHeader::getAuth, Squid uses a global buffer to store the decoded data. Squid does not check that the decoded length isn't greater than the buffer, leading to a heap-based buffer overflow with user controlled data.
CVSS metrics
4 scores · 3 sources · 3 versionsHigh 8.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 2 agree
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
High 7.5Preferred score · OSV · Red hat (Ecosystem advisory) · calculated from vector
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
49.04%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 49.04% on 18-09-2026
18-09-202618-10-2026
EPSS score49.04%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat11 products
- enterprise_linux8.0
- enterprise_linux_eus8.1 | 8.2 | 8.4 | 8.6
- enterprise_linux_server_aus8.2 | 8.4 | 8.6
- enterprise_linux_server_tus8.2 | 8.4 | 8.6
- libecap< 0:1.0.1-2.module+el8.0.0+4045+70edde92
Debian2 products
- squid< 4.8-1
- debian_linuxEOL10.0
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 19.04
Fedoraproject1 product
- fedoraEOL29
Squid-cache1 product
- squid≥ 4.0.23, ≤ 4.7
5 vendors · 16 products
References
19 links- www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patchX Refsource CONFIRMPatchVendor Advisory
- access.redhat.com/errata/RHSA-2019:2593Vendor AdvisoryX Refsource REDHATThird Party AdvisoryAdvisory
- lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.htmlVendor AdvisoryX Refsource SUSEBroken Link
Show all 19 references
- lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.htmlVendor AdvisoryX Refsource SUSEBroken Link
