CVE-2023-46847: redhat enterprise_linux Classic Buffer Overflow
CVSS: 8.6v3.1HighModified
AliasesALPINE-CVE-2023-46847RHSA-2023:6805RHSA-2023:6882RHSA-2023:6884RHSA-2023:7576RHSA-2023:7578UBUNTU-CVE-2023-46847DEBIAN-CVE-2023-46847
Published 03-11-2023Last modified 07-08-2026
Vulnerability summary
CVE-2023-46847 is a high (CVSS 8.6) Classic Buffer Overflow vulnerability in redhat enterprise_linux. EPSS estimates a 88.35% chance of exploitation in the next 30 days, higher than 99.7% of scored vulnerabilities.
CVSS score
8.6/10
010
High · v3.1 (CVE.org)EPSS score
88.35%
0%100%
Critical · 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 18 · Related 6Timeline
- 03-11-2023PublishedVulnerability first disclosed.
- 07-08-2026Last modifiedVulnerability information updated.
Description
Squid is vulnerable to a Denial of Service, where a remote attacker can perform buffer overflow attack by writing up to 2 MB of arbitrary data to heap memory when Squid is configured to accept HTTP Digest Authentication.
CVSS metrics
6 scores · 6 sources · 1 versionHigh 8.6Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:HSources6 sources · 7.5–8.6
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
- OSV · Red hatEcosystem advisory · calculated8.6HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
- OSV · UbuntuEcosystem advisory · calculated8.6HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
88.35%
Chance of exploitation in the next 30 days
Percentile
100%
Versus all other CVEs
30-day change
0.00 pp
From 88.35% on 18-09-2026
18-09-202618-10-2026
EPSS score88.35%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat15 products
- enterprise_linux8.0 | 9.0
- enterprise_linux_eus8.6 | 8.8 | 9.0 | 9.2
- enterprise_linux_for_arm_648.0_aarch64
- enterprise_linux_for_ibm_z_systems8.0_s390x
- enterprise_linux_for_power_little_endian8.0_ppc64le
Ubuntu2 products
- squid< 4.10-1ubuntu1.8 | < 5.7-0ubuntu0.22.04.2
- squid3< 3.5.12-1ubuntu7.16+esm2 | < 3.5.27-1ubuntu1.14+esm1
Alpine1 product
- squid≥ 3.2.0.1, < 6.4-r0
Debian1 product
- squid< 5.7-2+deb12u1 | < 6.5-1
Squid-cache1 product
- squid≥ 3.2.0.1, < 6.4
5 vendors · 20 products
References
34 links- access.redhat.com/errata/RHSA-2023:6805Vendor AdvisoryX Refsource REDHATAdvisoryThird Party Advisory
- access.redhat.com/errata/RHSA-2023:6882Vendor AdvisoryX Refsource REDHATAdvisoryThird Party Advisory
Show all 34 references
- access.redhat.com/errata/RHSA-2023:6884Vendor AdvisoryX Refsource REDHATAdvisoryThird Party Advisory
- access.redhat.com/errata/RHSA-2023:7576Vendor AdvisoryX Refsource REDHATAdvisoryThird Party Advisory
- access.redhat.com/errata/RHSA-2023:7578Vendor AdvisoryX Refsource REDHATAdvisoryThird Party Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2245916Issue TrackingX Refsource REDHATREPORTThird Party Advisory
- security.netapp.com/advisory/ntap-20231130-0002/X Transferred
