7.8

CVE-2018-1000001: canonical ubuntu_linux Out-of-bounds Write

Modified
AliasesSUSE-SU-2018:0071-1SUSE-SU-2018:0075-1UBUNTU-CVE-2018-1000001
Published 31-01-2018Last modified 05-08-2024

Vulnerability summary

CVE-2018-1000001 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in canonical ubuntu_linux. EPSS estimates a 13.37% chance of exploitation in the next 30 days, higher than 96.4% of scored vulnerabilities. 3 public exploits are recorded.

Priority
Prioritiseweaponized exploit

Weaponized exploit (exploit-database, 13-06-2018)

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.0 (NVD)
EPSS score
13.37%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits3exploit-database, metasploit

Advisory lineage

Upstream 0 · Downstream 11 · Related 8
MGASA-2018-0096MGASA-2018-0098OPENSUSE-SU-2024:10792-1RHSA-2018:0805SUSE-SU-2018:0074-1SUSE-SU-2018:0076-1

Timeline

  1. 31-01-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

13.37%

Chance of exploitation in the next 30 days

Percentile

96%

Versus all other CVEs

30-day change

No change 0.00 pp

From 13.37% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

3 found
  • exploit-databaselocallinuxVerified

    glibc - 'realpath()' Privilege Escalation (Metasploit)

    Maturity: weaponized

  • exploit-databaselocallinuxVerified

    glibc < 2.26 - 'getcwd()' Local Privilege Escalation

    Maturity: weaponized

  • MetasploitMetasploitremoteUnverified

    glibc 'realpath()' Privilege Escalation

    exploit/linux/local/glibc_realpath_priv_esc

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse9 products
  • glibc&distro=SUSE Linux Enterprise Point of Sale 11 SP3< 2.11.3-17.110.3.1
  • glibc&distro=SUSE Linux Enterprise Server 11 SP3-LTSS< 2.11.3-17.110.3.1
  • glibc&distro=SUSE Linux Enterprise Server 11 SP3-TERADATA< 2.11.3-17.110.3.1
  • glibc&distro=SUSE Linux Enterprise Server 11 SP4< 2.11.3-17.110.3.1
  • glibc&distro=SUSE Linux Enterprise Server 12 SP1-LTSS< 2.19-40.9.5
Redhat7 products
Ubuntu3 products
  • eglibc< 2.19-0ubuntu6.14
  • glibc< 2.23-0ubuntu10
  • musl< 0.9.15-1ubuntu0.1~esm1 | < 1.1.9-1ubuntu0.1~esm2
Canonical1 product
Debian1 product
  • glibc< 2.26-4
Gnu1 product

6 vendors · 22 products

References

23 links
Show all 23 references