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CVE-2017-15710

high · 7.5

In Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and 2.4.0 to 2.4.29, mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user's credentials. If the header value is not present in the charset conversion table, a fallback mechanism is used to truncate it to a two characters value to allow a quick retry (for example, 'en-US' is truncated to 'en'). A header value of less than two characters forces an out of bound write of one NUL byte to a memory location that is not part of the string. In the worst case, quite unlikely, the process would crash which could be used as a Denial of Service attack. In the more likely case, this memory is already reserved for future use and the issue has no effect at all.

7.5
CVSS
17.1%
EPSS (exploit prob.)
97th
EPSS percentile
2018-03-26
Published

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-787

Affected products

VendorProductAffected versions
apachehttp_server2.4.1
apachehttp_server2.4.2
apachehttp_server2.4.3
apachehttp_server2.4.4
apachehttp_server2.4.6
apachehttp_server2.4.7
apachehttp_server2.4.9
apachehttp_server2.4.10
apachehttp_server2.4.12
apachehttp_server2.4.16
apachehttp_server2.4.17
apachehttp_server2.4.18
apachehttp_server2.4.20
apachehttp_server2.4.23
apachehttp_server2.4.25
apachehttp_server2.4.26
apachehttp_server2.4.27
apachehttp_server2.4.28
apachehttp_server2.4.29
debiandebian_linux7.0
debiandebian_linux8.0
debiandebian_linux9.0
canonicalubuntu_linux12.04
canonicalubuntu_linux14.04
canonicalubuntu_linux16.04
canonicalubuntu_linux17.10
canonicalubuntu_linux18.04
netappsantricity_cloud_connectorall versions
netappstorage_automation_storeall versions
netappstoragegridall versions
netappclustered_data_ontapall versions
redhatenterprise_linux6.0
redhatenterprise_linux7.0
redhatenterprise_linux7.4
redhatenterprise_linux7.5
redhatenterprise_linux7.6

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2017-15710